Checkboxradio: Deprecate option "mini"

This marks the occurrences of the option as deprecated, and moves processing of
the initial value of wrapperClass from _wrapper() to _setOptions(), so that
ui-mini will be applied if it's present in wrapperClass even if the mini option
is false.

Note that this requires the wrapperClass option to be processed after the mini
option in _setOptions().

Closes gh-7466
Fixes gh-7463
Pagecontainer: Remove code dealing with subPageUrlKey special case
Path: Remove code dealing with subPageUrlKey
Path: No longer test for correct stripping of subPageUrlKey
Navigation: Make sure location is encoded when going to a funky page
Init: Correctly assign data-url for initial page
Init: Make sure "data-url" attribute for initial page is decoded
Pagecontainer: Escape dataUrl when trying to find page based on it

Fixes gh-1383
Pagecontainer: Decode URI when assigning to "data-url" during _parse()
Pagecontainer: Use decoded URL to build selector for data-url
Pagecontainer: Call convertUrlToDataUrl() via _createDataUrl()
Path: Always uri-decode when computing dataUrl
Pagecontainer: Remove extra decoding step, now part of _createDataUrl()

This also removes the possibility that a URL gets double-decoded.
Pagecontainer: Test behavior of _find() in the face of weird URLs
Navigation: Use data-url retrieved from Ajax request in its encoded form