WTD-839
.t-view-switcher > .view-switcher;
Added CSS transition to hide/show of view-switcher;
Moved .view-switcher hide/show to _frame.scss;
Tweaked .frame:hover to raise z-index to show complete border;
WTD-839
Refactoring in advance of style mods to switcher when in frame;
Moved btn styles from _controls.scss to _buttons.scss;
Markup cleaned up with css classing simplified;
Don't pass a domainObject instance into mct-representation
until a view for that specific domainObject is available;
this avoids ordering issues where a new domainObject is
passed briefly to controllers in represented views before
a event is issued, which can result in undesired
behavior for views that need to manage resources (such as
the subscriptions used to support telemetry retrieved
from the WARP Server, WTD-644.
Refactor view switcher to simplify it; treat it
as a representation of a domain object that modifies
an ng-model. This simplifies reuse, e.g. in frames
within a layout. WTD-535.
