Slider tooltip: CSS: Centre text inside the slider button by using line-height.
Revert "Slider: CSS: Fix centering for mini button."

This reverts commit 5c79d3938f9c3247bd551a352d0b0b8db13e5bf6.
Slider: fixed corner styling, margin and slider-bg height issues.
Theme: New theme class ui-fill-* for slider bg, read-only lists, count bubbles, etc.
Slider: Correction mini slider margin. Removed duplicate field contain margin 0 rule.
Navbar: Updated CSS to new button markup and icons in pseudo elements.
Navbar: Updated CSS to new button markup and icons in pseudo elements.
Demos: updated navbar demo page.
Collapsible (set): Updated CSS to new button markup and icons in pseudo elements.
Revert "Custom select: Escape weird characters in popup/dialog ID when they become hrefs. Fixes #5893."

This reverts commit f0b2417d4d8cbd84903fe9c1112a34b1ef13a039.

Conflicts:
	js/widgets/forms/select.custom.js

It is better to set the href to something valid rather than something that has escaped characters. The responsibility for correctly identifying elements based on a valid href goes to navigation/popup.
Path: Add function hashToSelector which takes a valid hash and escapes weird characters so that the resulting string may serve as a jQuery selector.
Navigation: Make use of new hashToSelector() function to correctly identify embedded dialogs that do not posess the data-url attribute. Fixes #5949 - loadPage: Selecting by ID not special-character-friendly
Popup: Make use of new hashToSelector() function to correctly identify embedded popups.
Prefetch: Check for existance of options object before checking prefetch property Fixes #5877 - loadPage Cannot read property 'prefetch' of undefined and addresses execption from #5951
Slider tooltip: Removed rule for ui-btn-inner.
Listview: Removed code that was adding classes to ui-btn-inner.
Navbar: Removed code that checked if the event target is ui-btn-inner.
Custom select: Remove dialog upon _destroy. Fixes #5935 - Dynamic Select empty when opening second time.
Tests: Integration: Custom select: Ensure dialog is removed after destroying dialog-sized select menu.
Dialog: Render un-closeable during pagebeforehide. Fixes #5956.