Bug 989469 - Move the common files from browser to global. r=Unfocused

--HG--
rename : browser/themes/linux/in-content/common.css => toolkit/themes/linux/global/in-content/common.css
rename : browser/themes/osx/in-content/common.css => toolkit/themes/osx/global/in-content/common.css
rename : browser/themes/shared/in-content/check.png => toolkit/themes/shared/in-content/check.png
rename : browser/themes/shared/in-content/check@2x.png => toolkit/themes/shared/in-content/check@2x.png
rename : browser/themes/shared/in-content/common.inc.css => toolkit/themes/shared/in-content/common.inc.css
rename : browser/themes/shared/in-content/dropdown-disabled.png => toolkit/themes/shared/in-content/dropdown-disabled.png
rename : browser/themes/shared/in-content/dropdown-disabled@2x.png => toolkit/themes/shared/in-content/dropdown-disabled@2x.png
rename : browser/themes/shared/in-content/dropdown.png => toolkit/themes/shared/in-content/dropdown.png
rename : browser/themes/shared/in-content/dropdown@2x.png => toolkit/themes/shared/in-content/dropdown@2x.png
rename : browser/themes/shared/in-content/help-glyph.png => toolkit/themes/shared/in-content/help-glyph.png
rename : browser/themes/shared/in-content/help-glyph@2x.png => toolkit/themes/shared/in-content/help-glyph@2x.png
rename : browser/themes/shared/in-content/sorter.png => toolkit/themes/shared/in-content/sorter.png
rename : browser/themes/shared/in-content/sorter@2x.png => toolkit/themes/shared/in-content/sorter@2x.png
rename : browser/themes/windows/in-content/common.css => toolkit/themes/windows/global/in-content/common.css
Bug 1003053 - Fix panel subview anchor arrow position. r=Gijs
Bug 1007059 - Enable WebIDE by default. r=paul
Bug 1007642 - Remove pointer cursor for Location Bar and search buttons on Linux. r=Gijs
Bug 1016037 - Remove actor IDs from web audio editor's inspector. r=vp
Bug 1016613 - Replace RemoteTabsPanel view with ViewStub in tabs_panel.xml and create new layout file to inflate the ViewStub when user clicks on 3rd button in TabsPanel. r=mcomella

This was done in order to save on resources and not create the RemoteTabsPanel until needed