Failure to use unicode literals (u'')

[ErwinJunge]

The code uses string literals '' instead of unicode literals u'' in a lot of places. When combined with potential unicode characters from database content this will break on encoding errors.

We should convert all regular string literals to unicode literals.

[luapmartin]

Hi @rohithasrk I have propose a solution by adding unicode_literals from the __future__ package to ensure unicode strings #56

[rohithasrk]

Hi @luapmartin. Will review your PR soon. Give me sometime