Added support for users connecting their dwolla accounts.
Fleshed out implementation of Dwolla payments, plus groundwork for Dwolla refunds.
Corrected sign up form error display.
Implemented dwolla refunds.
Disabled autocompletion of dwolla pin fields.
Added event start/end time fields. Related to #140.
Corrected clearing of Dwolla OAuth connection on every Event save.
Split survey and hosting views. Made address fields on survey required when they should be.
Related to #152.
Added logo to navbar-brand

still needs more styling
Alignment fixes to navbar-brand
Merge branch 'master' into csv_exporter