Global and Local Clear (#2418)

* first proto of global clear, working on tables

* global clear works on plots

* styling

* Status bar migration to top of layout, WIP

- Refine and remove legacy styles for Indicators;
- Significant cleanup in Indicator markup;
- Remove unnecessary wrapper component StatusBar.vue;
- Move collapse-button styles to a more general location in _controls
.scss;
- New hasMenu mixin to allow easier application of disclosure control
styling;

* Status bar migration to top of layout, WIP

- Refine styles and markup for Indicators;
- Better separation of styles for clickable and non-clickable
Indicators;

* Status bar migration to top of layout, WIP

- Added tracking style to indicator-template;
- Moved click action to button in label of globalClearIndicator;
- Removed unnecessary markup in Indicators.vue;
- Commented out __head collapse button for now in Layout.vue;

* Status Bar Migration WIP

- Significant progress styling Indicators and their hover bubbles;
- Pull back from clickable Indicators to hover approach;
- Better theme-based constants for Indicator menu-related colors;

* Status Bar Migration WIP

- Significant refactor of label element naming in multiple indicator
markup files;
- Refactor label-related CSS;
- Better class naming: no-collapse > no-minify;
- Refactor example *-launch files to use buttons instead of <a> tags;
- Significant progress on expanding shell head and button styling;

* Status Bar Migration WIP

- Cleanups, sanding on Indicator CSS;
- Added local storage retention for head expanded state;
- Adjust dark theme colors for $colorWarningHi for better legibility;
- Other minor tweaks and fixes;

* Status Bar Migration WIP

- Suppress background in Indicators;
- Restore Snow as default theme;

* add a local clear action, rename plugin

* objectViews extends eventemitter, table view provider provides an onClearData function that is called from ObjectView when clear event is emitted. TODO - support plots

* add support for plots via legacy view provider

* add test for clearDataAction

* remove focus from test file

* install the following plugins by default:
Import Export
Folder View
Tabs View
Flexible Layout
LAD Table
Go To Original Action

* update test to include plugin level tests

* remove focus from unit test

src/plugins/telemetryTable/TelemetryTable.js

@@ -49,6 +49,7 @@ define([
             this.telemetryObjects = [];
             this.outstandingRequests = 0;
             this.configuration = new TelemetryTableConfiguration(domainObject, openmct);
+            this.keyString = this.openmct.objects.makeKeyString(this.domainObject.identifier);
 
             this.addTelemetryObject = this.addTelemetryObject.bind(this);
             this.removeTelemetryObject = this.removeTelemetryObject.bind(this);
@@ -260,6 +261,7 @@ define([
             Object.keys(this.subscriptions).forEach(this.unsubscribe, this);
             this.openmct.time.off('bounds', this.refreshData);
             this.openmct.time.off('timeSystem', this.refreshData);
+
             if (this.filterObserver) {
                 this.filterObserver();
             }