new-plot import (#1557)

Merge of new plot
* Introduces new Plot object and view
* Removes Old Plot
* Add LAD support and state type to generators
* Removes Telemetry Panel Type
* Telemetry API Updates
* UTCFormat.parse: passthrough numbers
* TelemetryAPI: default request arguments
* TelemetryAPI: fix enum formatting
* Markup and styling to support new plots

platform/commonUI/general/res/sass/tree/_tree.scss

@@ -23,7 +23,7 @@
 ul.tree {
     @include menuUlReset();
     @include user-select(none);
-    li {
+    > li {
         display: block;
         position: relative;
     }
@@ -53,12 +53,10 @@ ul.tree {
     .view-control {
         color: $colorItemTreeVC;
         margin-right: $interiorMargin;
-        height: 100%;
-        line-height: inherit;
         width: $treeVCW;
-        &:before { display: none; }
-        &.has-children {
-            &:before { display: block; }
+        &:before { display: block; }
+        &.no-children {
+            &:before { display: none; }
         }
     }