Fix PEP8 coding style violations (except E127)

`pep8 *.py --exclude=ui*.py,prj2*,main* --ignore=E127`returns nothing
anymore.

TODO: FIX overindentation errors

As part of http://24pullrequests.com
Fix PEP8 coding style violations

As part of http://24pullrequests.com
Merge branch 'habi-development' into development