open #74
CSS and markup changes for split pane holders;
drop shadow added to tree area;
Tree item cleanups;
This or earlier commit broke treeview nav action;
TO-DO: fix treeview nav action to hide menu;
WTD-1392
WTD-1367
WTD-1391
Some significant reorging in _menus.scss and _constants;
Create menu normalized with context menu styles;
Bottom bar of overlay overflow set to visible to prevent button clipping;
WTD-980
WTD-396
Changed glyph for stacked plots;
Normalized button line-heights and size of required symbol;
Updated symbol art in symbols font;
Restored mistakenly removed "menu" gesture to grid-item;
WTD-1247
WTD-884
Changed CSS .l-infobubble-wrapper abs > relative;
Added display: block class for mct-container;
Tweaked bubble evaluation JS for 'goLeft' behavior;
Added constants for bubble max width and left/right margin;
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-1048
Originally did a lot of this work in warp1048 by mistake
This commit pulls in all /platform-only changes from that branch
Mods are mostly related to WTD-1046 specifically, but also touch toolbar and buttons
WTD-894
Significant migration of inline styles to CSS classes;
Changed telemetry component so that when title is hidden, telem element can take up 100% of the element width;
Static text elements now show scrollbars on overflow;
Added padding and box-sizing to text elements - this is throwing off the selected control because of the offset and should be fixed;
