Duplicate Repeat Node

Add new option for node duplication in macroexecutor.
Add button allowing to duplicate a Repeat Node in macroexecutor.

Add and remove blank lines following PEP8.

exc_info is a tuple, create string representation of it before using it
in string formatting.

Use an internal function to validate if a value is a chunk. Otherwise the
condition is too complicated to understand.

Implement support for 1D experimental channels in ascanct where data transfer
is based on change events of Data attributes (JSON encoded).

Add methods to allow sequencer to duplicate nodes.
Review and modify the way in which duplication of nodes
is happening in macroexecutor.

gtk-copy icon was not correctly loaded on sequencer using taurus3.
Use edit-copy icon instead.

This reverts commit 99f0310.

This reverts commit 54f4a48.

This reverts commit ea0f82f.

This reverts commit ffb9d33.

This reverts commit f5c2298.

AcquisitionTestCase is defined twice on the sardana.pool.test level.
This is actually a bug, workaround it by using the explcit import.

Controller's API uses camelcase instead of underscores. Controller wrong
usages.

Move check of passing repeatitions of a single members encapsulated in a list
to the decodeRepeat method. This is because the decodeNormal method is also
used for non repeat parameters. If the exception gets raised in this case its
message may be confusing.

Accepting brackets for single paramrepeat and default values

active_domain and passive_domain names are not intuitive. They apply to
the selection of domains of the following synchronization parameters
Initial and Active respectively. Change their names to initial_domain and active_domain
respectively.

Default value is no more necessary since the initial and active domains
were excluded from the SEP6 scope. Leave them commented if we consider adding
them in the future. If not, they could be removed.

Current split is based on eval and gives problems when string contains
special characters like "." or "\". Use a proper parser to avoid this
problems. Fix sardana-org#434.

…org#436

During integration of sardana-org#436, I accidentally pushed a change in the
default motor for the pt14d macro.

Revert that from mot16 to mot1

SynchDomain.Default dissappeared from the enum's definition. Use None as
the indicator of the default behavior.

…s-pr-426

The macro parameters and sequencer editor models define _duplicateNode()
 but it is accessed from the view, so they should be public.
Refactor them to `duplicateNode`

Example of a custom procedure is missing. Add it.

Taurus 4 does not support model names starting from the authority e.g.
pc255:10000/sys/tg_test/1 but Sardana still uses these names.
Add tango:// scheme identifier as a workaround.

Motion configuration may raise errors e.g. motion attribute is out of limits.
This errors are always printed to the user as "error while moving to waypoint".
Improve the verbosity of these errors with printing what exactly went wrong.

Add option for node duplication in macroexecutor (issue 426)

Forcing readout from hw in FIO recorder

Use negative lookbehind assertion in the regular expression describing
quoted parameter in order to allow passing quotes escaped by backslash.

Also avoid string cutting in order to exclude quotes and single quotes
from the string parameters. Do it by explicit extraction of the given group.

SEP6 developments uses its own version of the sardana-test image. Now this version
is merged into the master one. Adapt the travis configuration.

SEP6 - Continuous Scans

Fix sardana-org#442: allow escaped quotes in parameters (spock)

Apply command:
autopep8 -ir src test doc scripts sandbox sardanaConfig setup.py

Reduce flake8 errors from 21106 to 4160.

Apply command:
autopep8 -a -ir --select="E711" src test doc scripts sandbox sardanaConfig setup.py

Apply command:
autopep8 -a -a -ir --select="E713" src test doc scripts sandbox sardanaConfig setup.py

Apply command:
autopep8 -a -a -ir --select="E712" src test doc scripts sandbox sardanaConfig setup.py

Apply command:
autopep8 -a -a -ir --select="E721" src test doc scripts sandbox sardanaConfig setup.py

Apply command:
autopep8 -a -a -ir --select="W291" src test doc scripts sandbox sardanaConfig setup.py

Apply command:
autopep8 -a -a -ir --select="W293" src test doc scripts sandbox sardanaConfig setup.py

Apply command:
autopep8 -a -a -ir --select="E128" src test doc scripts sandbox sardanaConfig setup.py

joblib project (https://github.com/joblib/joblib) has a nice script for
checking python style in the codebase using the flake8 tool. Copy it as a base
for similar script for Sardana project.

* change project name to sardana-org/sardana
* change branch to compare to develop
* apply flake8 on all *.py files

Remove the temporary remote only if it was previously added and regardless
of other conditions.

Install flake8 in travis-ci environment. Run flake8 check on the differences
only e.g. only changes added in a pull request.

Apply autopep8 (sardana-org#54)

Add flake8 check on diff to travis-ci

Revert implementation to what was present prior 6b5b58e (removing units).
This logic does not have too much sense - timer is not used to control the 0D
chennel but at least it does not provoke exception.

Fix sardana-org#448: expconf problem with timers of 0D

Copy-paste bug in read_Value function

Conflicts:
	src/sardana/macroserver/scan/gscan.py
	src/sardana/pool/controller.py
	src/sardana/pool/poolcontroller.py
	src/sardana/pool/poolcontrollers/DummyOneDController.py
	src/sardana/tango/pool/OneDExpChannel.py

Include on the WriteOne method the axis and the value as paramters.

Use the same implementation to update the standard_axis_attributes
like the other controllers.

Change from DevLong to DevDouble the tango attribute Value of the
IORegisterController.

ScanEndStatus enumeration indicates what was the reason of the scan
termination.

step_scan method has a hard to understand logic which, most probably, was
introduced in order to treat differently the normal scan termination from
the other types of terminations e.g. user abort, exception.
Since from sardana-org#455 we treat indifferently these cases we can simplify
the step_scan method.

Issue 455

Implement a Buffer class with the possibility to access its elements via
index and maintaining the order of elements.

Enhance BufferAttribute class for the needs to handle pseudocounters.
set_value_chunk was splitted in two different methods: append_value_buffer
and extend_value_buffer.

This commit breaks the functionalities in the experimental channels.

Split put_value_chunk in append_value_buffer and extend_value_buffer methods.
Add clear_value_buffer method.

This commit still breaks the functionalities in the experimental channels
and acquisition classes.

Some experimental channels may accumulate values in the buffer e.g. the ones
which participates in the pseudo counters. Clear the buffers after when the
acquisition ends.

Use new methods append & extend in the Software and Hardware acquisitions.
These methods "knows" how to assign the indexes so eliminate _fill_idx
method from the Channel class.