I#28787: Add Scrips menu

Add Scrips menu with 'Select' and 'Create' options. The 'Select' opt
defaults to Admin/Scrips path unless the user comes from Global or
Queue's Scrips listing page. The 'Create' one points to the same place
for all cases, except it addes query params when from global or queue
listing pages.
Merge branch '4.2/add-scrips-menu' into 4.2-trunk