Web UI

Added the initial implementation of a WEB UI.
NB: This release have breaking changes with versions <v0.2.0

Doc:
https://postmannen.github.io/ctrl/webui_overview.html

v0.1.0

Rewrote large parts of the code. The API is not backwards compatible with previous versions.

Current functionality:

Method name	Description
opProcessList	Get a list of the running processes
opProcessStart	Start up a process
opProcessStop	Stop a process
cliCommand	Will run the command given, and return the stdout output of the command when the command is done
cliCommandCont	Will run the command given, and return the stdout output of the command continously while the command runs
tailFile	Tail log files on some node, and get the result for each new line read sent back in a reply message
httpGet	Scrape web url, and get the html sent back in a reply message
hello	Send Hello messages
copySrc	Copy a file from one node to another node
errorLog	Method for receiving error logs for Central error logger
none	Don't send a reply message
console	Print to stdout or stderr
fileAppend	Append to file, can also write to unix sockets
file	Write to file, can also write to unix sockets
portSrc	Forward tcp conntections between ctrl nodes