Bugfix: Weird behaviour after switching users

After switching user new service adapater instances were created but never
passed on to the registry.
Update copyright header.
Updated copyright date
Implemented Mark's suggestions

Corrected indention and comment; changed to iterate over values
instead of keys and calling .getValue()
Added text "ROIs" to filter toolbar label
jquery-ui custom images cleanup
Check for duplicate pixels IDs when adding to list.
jquery-ui cleanup:
 - adding README file and few others from the original package
 - removing themes/flicker
panojs css cleanup
webgateway css cleanup
webclient dusty.css and dusty_ie.css cleanup
moving wrapping JQuerySpinBtn by top level container
fixing embedding dragdiv.mousewheel in viewer
keeping jquery-ui imports of css and js in one location
changing jquery-ui path in webgateway
changing jquery-ui path in viewer
removing jquery-ui-1.8.19.custom.min.js in favor to

3rdparty/jquery-ui-1.8.19/ui/jquery-ui.js
introducing js and css compression using django-pipeline, see #11519

This is first step to make embedding the viewer on static HTML page
examples of how to embed the viewer and minified files
merge develop -D org: PR 1960 (Remove cut link 11882)