Bug 920270 - Basket subscribe API not returning token anymore

The Basket API's subscribe call is going to stop returning the
token and become purely asynchronous. Don't expect the token in
the response, and adapt other code to query Basket for the token
later if we need it.
[Bug 699530] Sanitizer now drops tables that we don't want to copy to dev/stage
Merge pull request #733 from Sancus/drop-tables

[Bug 699530] Sanitizer now drops tables that we don't want to copy to dev/stage
Updating SQL syntax for the DROP statements.
Merge pull request #734 from Sheeri/patch-4

Updating SQL syntax for the DROP statements.
Bug 943736 - Add Jinja tags to access the context
[Fix Bug 932652] Filter out @ and urls from twitter usernames, and validate correct format
Merge pull request #725 from Sancus/932652-twittervalidate

[Fix Bug 932652] Filter out @ and urls from twitter usernames, and valid...
[fix bug 939752] Add Url with text/html.
Merge pull request #706 from dpoirier/bug-920270-basket-api

Bug 920270 - Basket subscribe API not returning token anymore
Merge pull request #737 from glogiotatidis/opensearch-url

[fix bug 939752] Add Url with text/html.
Merge pull request #731 from dpoirier/jinja_context_helper

Bug 943736 - Add Jinja tags to access the context
[bug 699530] Remove taskboard_* tables.

taskboard_* tables are leftovers of now removed code. We removed them
from our database, so now we can remove them from this script as well.
Merge pull request #736 from glogiotatidis/anon

[bug 699530] Remove taskboard_* tables.