Fixed translation and CSS problems

Added long text for pagination buttons (desktop). "Read On" links made
translatable. Fixed polish translation errors.
Merge pull request #113 from jmiziolek/polish-translation

Fixed translation and CSS problems
Update functions.php

Not sure if wordpress trims it but better to remove that space
Update Pot File

I've updated the pot file since I realized that some of the strings were
not in the pot category.
10 new strings added and 12 obsolete strings removed.
Merge pull request #115 from firatakandere/master

A space before parameter & Pot Update
Merge branch 'master', remote-tracking branch 'upstream/master'