Another bunch of changes

* I've changed `VERSION` export to smth expected by [PEP-396](http://www.python.org/dev/peps/pep-0396/) (the main reason to do that: I want (somehow) to integrate DevAssistant into [kate](http://kate-editor.org)... _"somehow"_, because I've got some uncertain thoughts yet :)
But, recently I had greatly redesigned Python plugins support in kate, and found that the only reliable way to check dependencies in Python it is that PEP... so, it is why I'd like to turn devassistant to be PEP396 compliant :)
* also being a Gentoo user, I'd like to have (and I can do) some support for it :) Btw, I've wrote few ebuilds for DevAssistant. They are available from my overlay [here](https://github.com/zaufi/zaufi-overlay/tree/master/dev-util/devassistant)
* also here is one more supid^W test for jinja...

PS: sorry for a lot of small commits... -- I was failed to run tests locally, so I used travis to do it for me %) Especially taking in account that I have no Python2 @ my system...