Polish language translation file
Fixed keyword count with Cyrillic
Fixed NOT NULL field resource to NULL
Added styles for MODX 2.3

Thanks to christianseel
Merge pull request #31 from Gadoma/patch-1

Polish language translation file
Upped a version
Fixed action check

Fixed check on action to work with MODX 2.2 and MODX 2.3
Fixed width on counters
Styling fixes

- The SEO Pro counters will match the border-color of the corresponding input-box (grey/red/green)
- Fixed 1-pixel annoyance between Webkit/Firefox
- Lexicon changes

Signed-off-by: Gauke Pieter Sietzema <gp@sterc.nl>