Bug 941211 - use px sizes for Australis' panel/palette icons, and incorporate into height, r?jaws

--HG--
extra : rebase_source : 5b2253ada8f70032bc31f5416a8f94d45b07416c
Bug 956202 - split off UITour checking functions, r=Unfocused
Bug 956202 - split off some of the UITour tests, r=Unfocused

--HG--
rename : browser/modules/test/browser_UITour.js => browser/modules/test/browser_UITour2.js