fix HTML titles

put more specific information first so the titles provide useful
information in a typical browser tab.

Add titles for base pages that didn't have them.

Didn't test the one change to the exchange base because I get a
ResourceNotFound error when I got to the exchange locally.
remove unreferenced duplicate template
add trans
Merge pull request #923 from dimagi/html-title

make HTML titles actually useful and existent
show source on import_app for superusers by default
Merge pull request #926 from dimagi/import-app-source

show source on import_app for superusers by default
Merge pull request #911 from dimagi/commtrack-reqs

Support bulk requisition updates like "fill" and "approve"
i don't speak english