Fix 6320: Table/Coltoggle - fieldset in popup not getting enhanced
Filterable: add support for filtering select with optgroup
Core: Prevent additional space at bottom of fieldsets on Firefox. Fixes #6319.
Listview: Provide class ui-li-thumb to position elements other than img. Deprecate ui-li-has-icon. Fixes #6321.
Select: Always have an ID.
Custom select: Work with filterable. Fixes #6326.
Unit tests: Select: Make sure selectmenu widget button based on native select that does not have an ID does itself have an ID.
Controlgroup: Correct height of mini icon only buttons.
Button: Correct width of icon only buttons.
Demos: Add example showing a filterable/input inside a custom select popup/dialog. Fixes #6282.
Navigation: Honor formaction during submit. Fixes #3202.
Tests: Renaming unit/reset to integration/forms and adding test to make sure formaction is honored.
Popup: Correctly apply wrapper class.
Transition: do not set page focus on inital load to prevent jumping pages when in iframes
Theme: Make widgets outside page inherit theme from container.
Theme: Faster selectors.
Panel: Make sure we select the page on which the panel is shown. Fixes #6254.
Removed Hungarian notation from panel widget.
Panel: Class ui-link has been deprecated. Updated code.
Added missing semicolons.