move spotlight container back to Scroller

Allow paging controls to opt-out of next neighbor determination so
focus can pass outside of scroller
adjust selection overlay margin for rtl
[BHV-10255] added filtering back to highlight sample
convert spaces to tabs
Merge pull request #1643 from enyojs/BHV-10255-derekanderson

[BHV-10255] added filtering back to highlight sample
BHV-14852: Fix initial position to match default position.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
BHV-14856: Guard against uncreated DOM node. Also, optimization to prevent repeated calculation of popup bounds.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
ENYO-266 Delay unchecking item until checking is done.
To guarantee same behavior between tapping checkboxItem and direct calling of setSelectedIndex(),
we should prevent unchecking work before checking is finished due to Group.active updating.

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
ENYO-266 FIx Travis CI

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
BHV-14652: ContextualPopup[Samples Only]: Buttons Stack inside Popup
Marquee now detects LTR text and left aligns it to avoid an ugly hiccup in RTL.

Enyo-DCO-1.1-Signed-off-by: Blake Stephens <blake.stephens@lge.com>
ENYO-266 Fix loop iteration err
Current code could not execute for statement.

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
ENYO-266 Disable event bubbling when checkbox off
It is compensate code for https://github.com/enyojs/moonstone/commit/95d79a
Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
ENYO-266 Prevent 'onChange' event when we destroy clientControls.
In multiple select supported, removeControl() calls selectedChanged() without any arguments.
It will destroy clientControls of picker but onChange event is fired during this work.

On the other hand, if we call removeControl without multiple support, it does not fire onChange event.

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
ENYO-266 Prevent event bubbling instead of delaying de-select.

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
ENYO-266 Use flag to distinguish direct selectChanged call from removeControl()

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
ENYO-266 Decouple rebuilding selected array from removeControl() for better readability.

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
ENYO-266 Fix typo

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
ENYO-266: Factor out rebuilding of selected indices.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
ENYO-266: Cleaned-up some unnecessary code.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>