Set verision number to 1.4.0-beta-20131223
Update WP version to rc1 in anticipation of polyglot help
Refresh language files for new strings. Fixes #95
Fixes sr_RS translation file name. Ref #95
Added en-gb translation. Props @garyj
Updated pt-br translation. Props @fabianapsimoes
Updated readme.txt with changes since previous version. Ref #94
Update POT via wp.org. Ref #95
Reduces strings. Fixes #96
Update translations. #95 #96
Bump versions in all places to 1.4.0. Fixes #94 Fixes #97
Merging 1.4.0 release branch commits