Handles static and mixed styles for multiple items in a layout (#2907)

* Show non specific styles when updating multiple item styles
* Save sub object styles to it's domain object
* Layout UI tweak
* Fixes flexible layout bug.
* Fixes font size bug in telemetry view
* Fixes issues with newly places TVOs including transparent properties.
* Fixes #2908
* Say NO to 'transparent' === '__no_value'
- Fixes #2895;
* Ensure styles are correctly applied to domain objects and drawing objects when selected individually
* Ensure none treatment is correctly applied to objects when multple selecting
* Fix intial box border
* Tweaks to c-text-view layout
- Vertically center text;
- Normalize padding;
- Overflow: hidden;

* Tweaks to Clock and Timer layout
- Fixes #2893;
- Vertically center text;
- Normalize padding;
- Overflow: hidden;
- `position: absolute` when in Layout;

Co-authored-by: charlesh88 <charlesh88@gmail.com>
Co-authored-by: Andrew Henry <akhenry@gmail.com>

src/plugins/condition/StyleRuleManager.js

@@ -109,7 +109,7 @@ export default class StyleRuleManager extends EventEmitter {
         } else {
             if (this.currentStyle) {
                 Object.keys(this.currentStyle).forEach(key => {
-                    this.currentStyle[key] = 'transparent';
+                    this.currentStyle[key] = '__no_value';
                 });
             }
         }