Fix cosmetic issues

Fixes some cosmetic issues when building the postatus errors email.
Bug 1041662 - Remove warning about Firefox OS

Adding "bn-IN" and "ta" locale.
Correcting the locale short form of Hindi.
from "hi" to "hi-IN"
[bug 1043997] Track AoA users by twitter username
[bug 1049715] Remove content experiment code.
[bug 1044997] Fix weekly emails with no documents
[bug 1045982] Added ban/unban interface for AoA.

This adds an interface for moderators to ban or unban
specific twitter handles from using the AoA tool.
Fixed rate limiting on cron share link generation.