Review and integrate UI enhancements (#2078)

* [Frontend] WIP New local-controls classes

Fixes #2000
- h-local-controls
- Markup in plots changed
- Changed reset plot button's icon

* [Frontend] WIP local-controls classes

Fixes #2000
- Refactoring to use and apply local-control classes consistently;
- Plots and imagery done in main view and Display Layout contexts;

* [Frontend] WIP local-controls classes

Fixes #2000
- Use local-control classes in Timelines;
- Group Timeline buttons in l-btn-set;
- Use reset icon glyph;

* [Frontend] WIP local-controls classes

Fixes #2000
- Slight increase in size to buttons in frame context;

* [Frontend] local-controls classes

Fixes #2000
- Code cleanup;
- Update Style Guide content;
- Provisionally done, needs unit testing and double-checking;

* [Frontend] Better selecting in browse mode

Fixes #2000
- Better colors and approach to selecting in browse mode;

* [Frontend] Tweaks to pane collapse mini-tabs

Fixes #1758
Fixes #2000
- Enlarged mini-tabs and moved to screen top;
- Removed duplicative theme-based constants;

* [Frontend] Tweaks to "nav up" arrow button

Fixes #1758
Fixes #2000
- Increased hit area of .l-back "nav up" arrow in object-browse-bar;

* [Frontend] Glyph improvements

Fixes #1758
Fixes #2000
- New arrow glyph for view controls;
- Increased hit area of view controls in tree for mobile and desktop;
- Better "hamburger" menu glyph;

* [Frontend] Inspector refactor to CSS grid WIP

Fixes #1758
Fixes #2000
- WIP!!!;
- Good progress on Properties section;

* [Frontend] Inspector refactor to CSS grid WIP

Fixes #2000
- Significant mods to CSS and markup;
- New grid archetypes classes;
- Added title attribs to plot options edit and browse props;
- Added value, alarm markers to plot series browse props;
- Nearly done (?) but needs unit testing and cleanups;

* [Frontend] Minor tweaks to form and form-row

Fixes #2000
- Fixing margin problem with .form-row;
- h2 instead of div.section-header;

* [Frontend] Fixed H2 in Elements pool

Fixes #2000

* Refinements to Time Conductor

Fixes #2000
- Tweaks size of fixed position grab ticks;
- Positioning refinements to ticks and text;
- Hide major tick marks;

* Hide View Large button for nested hidden-frame Layouts

Fixes #2000
- When a layout is nested and has its frame hidden, hide the
View Large button;

* Better hiding of Time Conductor "Submit" button

Fixes #2000

* Re-added new icon-arrow-right-equilateral glyph;

Fixes #2000
Fixes #2078

* Remove commented styles/markup

Fixes #2000
Fixes #2078

* Repaired approach to hiding Time Conductor Submit button

Fixes #2000
Fixes #2078
- Renamed .off to .invisible and added refinements;

* Fixed wrong conflict resolutions; polish search

Fixes #2000
Fixes #2078
- .invisible instead of .off in search.html;
- Minor polishing to search;

fixes #1758
fixes #1763 
fixes #2011

example/styleguide/res/templates/controls.html

@@ -149,12 +149,21 @@
         <h2>Local Controls</h2>
         <div class="cols cols1-1">
             <div class="col">
-                <p>Local controls are typically buttons and selects that provide local control to an individual element. Typically, these controls are hidden in order to not block data display until the user hovers their cursor over an element, when the controls are displayed using a transition fade. Mousing out of the element fades the controls from view.</p>
+                <p>Local controls are typically buttons and selects that provide actions in close proximity to a component.</p>
+                <p>These controls can optionally be hidden to reduce clutter until the user hovers their cursor over an enclosing element. To use this approach, apply the class <code>.has-local-controls</code> to the element that should be aware of the hover and ensure that element encloses <code>.h-local-controls</code>.</p>
             </div>
-            <mct-example><div class="plot-display-area" style="height: 100px; padding: 10px; position: relative;">Hover over me
-    <div class="l-local-controls gl-plot-local-controls t-plot-display-controls">
+            <mct-example><div class="plot-display-area" style="padding: 10px; position: relative;">
+                Some content in here
+    <div class="h-local-controls h-local-controls-overlay-content l-btn-set">
         <a class="s-button icon-arrow-left" title="Restore previous pan/zoom"></a>
-        <a class="s-button icon-arrows-out" title="Reset pan/zoom"></a>
+        <a class="s-button icon-reset" title="Reset pan/zoom"></a>
+    </div>
+</div>
+<div class="plot-display-area has-local-controls" style="padding: 10px; position: relative;">
+    Hover here
+    <div class="h-local-controls h-local-controls-overlay-content local-controls-hidden l-btn-set">
+        <a class="s-button icon-arrow-left" title="Restore previous pan/zoom"></a>
+        <a class="s-button icon-reset" title="Reset pan/zoom"></a>
     </div>
 </div></mct-example>
         </div>