webadmin navigation moved to admin base template

Instead of each webadmin template redefining the webadmin links do it in
the base template. Javascript uses the url to highlight the current
navigation tab for the webadmin page
Prevents a NPE being thrown
Just added comment
Prevent deletion of users and group
Updated copyright date
Allow 'Cut' instead of 'Copy' when orphaned Dataset selected
Right-click menu ordered 'Cut, Copy, Paste'
copyright 2014 in containers.html
remove obsolete dropbox directory check
Fix order of 'Cut, Copy, Paste' in toolbar
Fixed admin tab selection

Admin tab selection was relying on a specific url deployment with a set
number of path components. Now it simply looks at the last component
which is reliable
Fixed spacing
Synchronize menu items and tools bar.
Merge pull request #2367 from dpwrussell/webadmin_nav

Move webadmin navigation to base template
Merge pull request #2459 from mtbc/remove-dropbox-dir-check

remove obsolete dropbox directory check
Merge pull request #2426 from dominikl/delete_user_bug

Bugfix: Prevent user/group deletion
Merge pull request #2430 from will-moore/PR2310_backport

Allow 'Cut' instead of 'Copy' when orphaned Dataset selected
Merge pull request #2471 from jburel/rebased/develop/cut-menu-tb

Cut menu tb (rebased onto develop)