[Frontend] Cleanups to Inspector config elements

open #729
In-progress!
Markup and CSS mods continued;
Config params added to PlotOptionsForm.js to
allow control-first layout per form row;
Changed titles of Inspector parts;

platform/commonUI/general/res/sass/overlay/_overlay.scss

@@ -88,7 +88,7 @@
         left: 0;
         right: 0;
         overflow: auto;
-        .field.l-med {
+        .field.l-input-med {
             input[type='text'] {
                 width: 100%;
             }