refactor report

[JavierCladellas]

Refactor and make an abstraction of the render-benchmarks application so that one can be able to use it for a any general dashboard (e.g. instead of having app- machine views, one could create a dashboard for Companies - Departments - Teams; or even like in ktirio.cases ) .
The idea is to have an application completely abstracted and independent of benchmarking.

Special configurations should be implemented in a plugin-like system (e.g. displaying custom tables, MVC components, templating, etc).

This work should heavily simplify adding new components to the templates (such as in #216 , or #172 )

Basic functionalities of the core app will be defined. [TODO]