Fixes: #1181 - navbar link stays active when using changePage()

Clears the active button class on the pressed navbar button after a
pagechange.
Listview Filter: Prevent onKeyUp handler to be called twice for the same value
Listview test: Added test case for issue #5198
Panel: Docs cleanup
Demos: Added two versions of the menu/form page to illustrate fixed positioning
Panel: Moved intro paragraph down in the source
Panel docs: Updating heading levels for consistency
Panel docs - removed redundant IDs, switched to mini buttons for examples
Panel: updates from @zachleat PR #5422 Add css back in for overflow-x, fixes issue with firefox open, removes unneeded class. Update docs to reflect changes
In order to have flexibility in where we place panels, we need to make
the main content wrap have a 3dtransform class
Making this pass linting and make content take up height of page
Merge branch 'master' of github.com:jquery/jquery-mobile
Popup: Pass placement through "popupbeforeposition" to allow handlers to modify the popup positioning
Merge branch 'master' of github.com:jquery/jquery-mobile
Docs: cleanup markup panel page, style in head.
Panel: Removed duplicate CSS.
Panel: fixed incorrect selectors.
Panel: re-order CSS.
[navigation] address issue with opera and dialog back button
address browsers that don't fire popstate on hash assignment Fixes #5414