Fixed some dropdown display issues
Removed ID and overflows, clearer WebAPI, escapes
Fixed overflow and UID in cluster definitions
Hover entire line (not only cell) in definitions
Fixed escapes and layout of the Pair screen
Cleanup pip temp dir before installing cvmo
Added deployment time and "extra" shell script
Re-disable duplicated form items when submitting

This is to avoid submitting two items with the same name with a
"simplified" configuration. Duplicated items were already disabled
during page load, but since some of them are dynamic, they might get
re-enabled when filling the context: hence the second disable before
submitting.
JS undisclose feature extended to input checkboxes
Correctly enabled "Desktop" mode for uCernVM