[1680] Poprawa do standardu pep8
[1680] Deleting unnecessary files
[1680] Correcting test passing problems
[1720] Correcting import syntax
[1720] Correcting import syntax
[1720] Correcting import syntax
Merge pull request #2 from kamilgrela/1720

[1720] correct import syntax
Merge branch 'master' of https://github.com/stxnext-kindergarten/presence-analyzer-kgrela into bug_1754

Conflicts:
	src/presence_analyzer/tests.py