Fixes addressing Wiki Admin GUI Improvements

This PR addresses some of the notes found in the "Admin GUI Improvements" Wiki, found here:
https://connectopensource.atlassian.net/wiki/display/FCPT/Admin+GUI+Improvements

<b>SPECIFICALLY:</b>
* Change "Add New Certificate" to "Add Certificate" - Since we an add certificates with status NEW/DISABLED/ENABLED, it is better we can call the button as "Add Certificate".  <b>Text changed.</b>
* All the tab names/menu items under Direct are without the "Manage" word except for Domains. It is better we say "Domains" instead of "Manage Domains".  <b>All instances changed.</b>
* The content of Trust Bundles go beyond the frame.  This may occur with other tables when the browser window is shrunk.  <b>The fix is via CSS word-wrap and word-break properties.</b>
* XHTML is not displaying text symbols that use HTML entity names.  <b>The fix is to change the problematic code snippets to use HTML entity numbers instead.  For instance, replace "&times;" with "&#215;". </b>
* Currently, the copyright modal box pops-up behind the page content layer.  <b>The fix is to move the copyright code to the bottom of the page code; this should address the layering issues. </b>
* On the Direct screens, in the "Agent Settings" modal pop-up, the buttons are in the wrong order and need the CSS classes switched between them, and remove "Cancel" button, for consistency with other screens.  <b>Fixed as noted.</b>
* Favicon is missing.  <b>Fix is to add the link reference in the head section of the base template.</b>