(Redmine issue: #3387)

This commit represents huge amount of work and introduces new Python-based version of Hawat web user interface for Mentat system. It is built on top of the great Flask framework. Currently it is still work in progress and many features are implemented only as dummy stubs, however the core functionality is almost finished. Following is a list of current key features:

  * Focus on modular architecture using Flask`s blueprint feature.
  * Multi-layered configurability (defaults, multiple file overrides).
  * Plugin system.
  * Internationalization support.
  * Support for multiple authentication systems.

This commit provides working albeit hollow starting point for future web interface development. IT IS NOT READY FOR PRODUCTION USAGE!!!

(Redmine issue: #3734,#3361)

While it was usefull in the past, it makes much more sense to force developer to manually increment package version number to have more control. (Redmine issue: #3387)

The duplication of recently built package to one with 'latest' string instead of version number was deprecated, however some tasks still attempted to use the incorrect file name. (Redmine issue: #3387)

Build number from Buildbot system now gets propagated to Grunt and autogenerated documentation. This feature is intended to be used for development (unstable) builds to somehow autoincrement the package version number. For production distributions this will be skipped and developer still has to set the desired version number manually. (Redmine issues: #3361 and #3387)

Package version is now represented as single string. This will enable better and easier version propagation into documentation and buildbot system. (Redmine issue: #3387)

This is not a widelly used feature and it was unnecessary complication for buildbot. (Redmine issue: #3387)

(Redmine issue: #3387)

(Redmine issue: #3387)

Mart of the files in repository will be published separatelly via Python wheels and PyPI. Mentat core deployment directory was moved into subdirectory, so that other deployment subdirectories may be in deploy directory. (Redmine issue: #3387)

(Redmine issue: #3387)

After successfull build the resulting deb package is duplicated to one with filename better suitable for automatic deployment in development environment. This filename contains string 'latest' instead of the version string and therefore overwrites any existing package.

This is the initial project release. It works, however it should still be considered as alpha release and work in progress. Couple of known issues:
* missing configuration validation
* missing documentation
* missing modules
* only partially working unit tests, not enough coverge of unit tests