Additional styling for identify results
Proper height for legend on resize
Tab -> Spaces

This file was mixed, so replacing to use spaces.
Allow topbar plugins to receive ref to legend

Previously only Sidebar plugins were given a reference to the legend
node, and Topbars were getting passed null.  This is to support a
plugin which can toggle the visibility of the legend.
Add plugin to toggle display of legend

Legend can be hidden via the plugin control or the new "minimize"
 button in the header.
Prevent errors from unrendered tree control

The resize event was firing when the tree control wasn't rendered,
resulting in errors in the console.  Safety check that the element
exists.
Revert "Use "radio button"-like UI to switch between Map 1, Map 2, and Split Screen"

This reverts commit b06a534c2971dd060f412ca1a466091af5bdd672.
===
The client didn't like the implementation as it required too much screen
real estate.

Conflicts:

	src/GeositeFramework/css/app.css
Add descriptive elements to map switcher

Now is more explicit.  Reads "Switch to <<other map #>>" and the
icon show the current map number.  Tooltip also updated to be
more explicit about the current state and what the action will do.
TNC users found this confusing, but didn't like the radio-button
solution.
Merge pull request #223 from mmcfarland/bugfix/feedback-round

Feedback round