WIP on importing account statements.
Move JS files to correct locations
Fixed up the USt declaration form and changed it to monthly reporting.
More tweaking
Moved tax declaration stuff to model
Much better wording now.
Fixed typo
Changed test helper requires in all tests
Fixed a mocking bug
Fixed test.
Statement Line works so far.
Cleaned up data and columns of features that were never used.
Added category to OutbankStatementLine
Commented tasks
Removed stuff from expense that didn't belong there.
Changed validations so that amount_net and tax is not required on the Payment base class, only on Expense and Invoice.
Fixed deleting expenses.
Use TAX_RATES from model.
Creating statement lines in the DB works now! pretty cool!
Removed TODOs, updated documentation