Another bunch of changes

* I've changed VERSION export to smth expected by PEP-396 (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 :)
* 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...