Bug 808716 - Lazily Fetch message bodies.
reflow comments
remove junk that got tested elswhere
Simplify tests, address some review comments
Almost address review comment do_waitForBodyReps -> getMessageBodyWithReps
Actually specify maximum fetch point
parserKlass -> parserClass
replace longtermId hacks with 'sessionOnly' op property to indicate an operation that only needs to be run during the current load/run of the application
Refactor process of saving/handling snippets and partial downloads
add some gaurds
initial implementation of callback for maybeRequestSnippets
Merge pull request #162 from lightsofapollo/fix-timezone-detect-onosx

Add space gaurd for timezone detection r=asuth
Merge pull request #161 from lightsofapollo/actually-delete-messages-in-tests

Ensure we get a header when issuing fakeServerDeletion
Add test to cover deleted header case when fetching bodyReps
add gaurd for empty bodies