UI enhancements

[lfunkhouser]

• [ ] Dark Theme support for Clear Search button
• [ ] Add tool tip to "X" Clear Search button
• [x] Grey out Symbol, Label, Enter Coordinates tabs until a symbol is selected to work with (for example, see buttons on the Pro ribbons that are not available for use) - Fixed in issue #381
• [ ] Make the tab stand out when hover over it if it is selectable, like hovering over tools in the Pro ribbons
• [ ] Highlight the active tab using Blue color ( examples hover over the component tabs - text turns to blue or hover over the
• [ ] Text in grayed out "Add to Map" button should follow other text in Pro. (i.e. see Clipboard tool text for "Paste"
• [ ] Enter Coordinates List Box is not Dark Theme when a Line or Area Symbols selected (ex: search for 'Axis of Advance' and then click Enter Coordinates Tab

Enter Coordinates List Box :