Panel: No transition for Windows Phone in case of fixed toolbars. Fixes #6349.
Grid: Margin for buttons inside ui-grid-solo. Fixes #6643.
Fixed toolbar: tapToggle - hide external fixed footers. Fixes #6604.
Selectmenu: It need not define option "disabled", because that option is inherited from the widget factory.
Page: Mark option contentTheme as deprecated.
Demos: Replace data-role="content" with role="main" class="ui-content".
Updated the Gruntfile to fix demos PHP includes.
'Changed version to: 1.4.0-rc.1'
'Changed version to: 1.4.0pre'