Built Call_Update MySQL functionality in. Upon adding a Call to the DB,
we also write each of its updates to the Call_Update table. Call_Update
items cascade on delete of the Call they relate to. Need to split up the
Facade stuff into different interfaces - it's getting cluttered.
(currently 99 Calls and 210 Call_Updates)
Fixing last commit - something went wrong.
Merge branch 'master' of https://github.com/ejmorrison/researchfunds.git