Fixed font size of Completion List Popup on Linux
fixed FBTest commandLine/55/issue55.js
Fixed tooltip of CSSImportRule
Issue 7338 (Inconsistent placement and display of separators within the
panel toolbar)
http://code.google.com/p/fbug/issues/detail?id=7338
Improved display of toolbar buttons
Collapse the separator also when there's no panel or no current object
to display
Issue 5586 (Use DOM Mutation Observers for MutationRecognizer)
http://code.google.com/p/fbug/issues/detail?id=5586
Part 1: Replaced mutation events by mutation observers in
MutationRecognizer
Issue 5586 (Use DOM Mutation Observers for MutationRecognizer)

http://code.google.com/p/fbug/issues/detail?id=5586
Part 2: Adjusted APIs using MutationRecognizer
More fixes regarding the MutationRecognizer
Fixed test message
Improved mutation filter and added comments (related to issue 5586)