rename StockReport parser class to StockReportHelper
add basic support for configuring and parsing requisitions
Merge branch 'master' into commtrack-reqs
make requisition actions an enum
add __repr__ to commtrack actions
convert in-process transactions from a dict to a class

also rename some variables to make it clearer what's being passed around
add utility function to make requisitions + tests

- incomplete stubs for including requisitions in SMS processing
- moving stuff around in tests
Merge branch 'master' into commtrack-reqs
refactore requisition handling code, hook in requisitions to sms handler

- also tests
remove empty/unreferenced file
in custom export maker, pass in all table configs instead of just first; suggestive of things to come
clean up a style; i18n
rearrange making way for repeats in custom export
refactor the form/case export differences into separate helper classes
factor out parsing of the POST param-based api for customizing export to a more orderly JSON format
fix for deid transform
Merge branch 'master' into custom-export-knockout
get expand/collapse icon back on location tree
switch custom exports UI to knockout and add repeats
remove vestigial `name`s in customize_export.html