The full stop

It makes no sense when it's time to localization. Cause on all language there is no "full stop" And should be included into pontoon as well.
Merge pull request #162 from anistuhin/patch-1

The full stop moved into <a> tag
fix last merge + make period optional
Merge pull request #163 from MichaelKohler/fixmerge

fix last merge + make period optional
Merge branch 'master' into gh-pages