Fix file viewer permissions.

tmpfile.mkdtemp creates a directory with 700 permissions,
then shutil.copytree copies the 700 over to "dest". This directory is
then unreadable by the webserver.
removing bango (bug 944769)
complete terms after creating account (bug 944540)
Merge pull request #1461 from oremj/fix_permissions

Bug 912491 (Fix file viewer permissions.)
allow editing, lock down transactions (bug 944769)
Merge pull request #1473 from andymckay/944769

944769
add Italy region (bug 945955)
remove h1 from italian dev doc
Merge branch 'master' of github.com:mozilla/zamboni
bump migration
and fix migration
add Italy flag (bug 945955)
Actually filter by app for per-app totals
do not make Italy a special region (bug 945955)
remove time and fallback from appcache (bug 942368)
add draft of pre-loaded apps terms and conditions (bug 907418)