Merge branch 'offline'
Don't setPristine after initial rendering.

Ticket ID: 852630
Use widget::first instead of bindBefore.

#260
Discard empty <option> added by Angular.  Fix #248
Trigger element::change before widget::change.  Fix #260
Add rule for height of toolbar inputs - fix for IE
Filter out invisible items when navigating. Closes #253.
Don't use $apply when scope is digesting.  Fix #263
Provide ability for attaching HTML attributes for ToolBar's elements. Closes #194
Add background color to first Pivot column
Fix ScrollView's prev/next methods for local data. Close #272
Splitter splitbars should not have a tabindex if the adjacent panes are not draggable and resizable. Fixes telerik/kendo-ui-core#273
Remove the old logic that prevents content refresh if the widget is not visible. Close #256
Add support for using HTML tags inside the text of a ToolBar's button. Fix #275
Add plain dataSource for Context Menu in angular. Closes #277
Honor safe flag when retrieving cache. Closes telerik/kendo-ui-core#278.
[build] Fix making bundles

make sure we don't include a subfile twice, even if it's required by
different components of a bundle.
Fix source map root and account for the added (c) text.
Fix dragging and slider in popover

Fix telerik/kendo#3573
Pass the copyAnchorStyles option from Menu to the underlying Popup widget