Added support for the embedded ruby language

Activated codemirrors native support for erb.
Corrected tab spacing
Fixed LanguageManager-test.js

Removed references to 'erb' and replaces with 'noSuchExt'.
HTML tag highlight added
Don't dismiss code hints on key up events except for Home and End keys.
Implementation of the navigation in the Recent Projects dropdown menu
Rename of a couple of functions
Improve closeAllFiles and runBeforeFirst
Consolidate link handling code
Add new strings + two fixes
Create directory fi + subdirectory 'Aloitus' and file index.html
Rename samples/fi/Aloitus to samples/fi/Aloitus/index.html
Create main.css
Create quick-edit.png
Delete quick-edit.png
Added projectRefresh event when project tree is refreshed but project root has not changed.
Added projectRefresh event doc.
Initial support for Slovak language

I have translated 1/4 of all strings. The following strings I will add
later.
update for Live HTML
Show CSS code hints in SCSS mode.