Localization and font changes

* Changed StyleEditor to FormatDialog in L10NSharp keys
* Added OpenSans to default font lists for Linux use
Adjusted tab words, upgraded gradients on controls
Give font size and line height combos more space

* also moved <select> element margin-left from html to css
Tab width should now handle longer localized tab names

*Also Reduce :hover precedence so selected tab doesn't hover
BL-662 localize tabs

* this wasn't working before, but seems to now!
Fix tab-changing bug and remove colon
Found more places to replace StyleEditor w/FormatDialog
Merge branch 'master' into MoreFormatDialogWork
Removing tabSelected(n) completely seems to work fine
Merge pull request #113 from gmartin7/MoreFormatDialogWork

BL-662, 696 and more format dialog work