Context-Menu for Tables (#2424)

* add context menu capability to table rows, add view switcher to preview

* add an option to limit context menu actions to the ones requested, and modify preview action to also include a view historical data action

* extend preview action into view historical data action

* add context menu to LAD Table

* add keys to context menu actions, allow tables to conditionally attach context menu handler

* working switch y axis label

* New vertical select element for Y axis configuration in plots

- CSS for vertically rotated selects for Y axis label selection;
- New theme constants;
- Removed themedSelect theme mixins;
- New SASS svgColorFromHex function;

* use keys in lad table context menu options

* show historical view context menu on alpha-numerics

* make reviewer requested changes

* pass contextual object path from object view down etc

* made reviewer requested changes: removed options object, pass in object path instead

* remove redundant function from LADRow.vue

src/plugins/telemetryTable/TelemetryTableViewProvider.js

@@ -48,7 +48,7 @@ define([
             canEdit(domainObject) {
                 return domainObject.type === 'table';
             },
-            view(domainObject) {
+            view(domainObject, isEditing, objectPath) {
                 let table = new TelemetryTable(domainObject, openmct);
                 let component;
                 return {
@@ -64,7 +64,8 @@ define([
                             },
                             provide: {
                                 openmct,
-                                table
+                                table,
+                                objectPath
                             },
                             el: element,
                             template: '<table-component :isEditing="isEditing" :enableMarking="true"></table-component>'