* rename costs, introduce budgets

* move files from costs to budgets

* rename cost_object to budget

* remove unused code

* move hook - should be turned into standard code in the long run

* move type attributes change over to budgets

* move patch to work_package proper

* move budget menu item up

* combine reporting, time and cost module

* remove rails based time_entries & reports code

* rename cost object filter

* adapt menu spec expectations

* use cost project module name in administration

* include timeline labels in migration

* properly place budget linking method

* fix permitted params

* remove outdated routing spec

* adapt budget request specs

* ensure order of descendent updates

* remove outdated specs

* fix checking for reporting to be enabled

* fix displaying spent units

* fix time entries activity event url

* reenable current rate tab

* fix path on budget page

* allow bulk editing of budgets only in one project scenario

* fix sanitizing reference in controller

* include module required for format_date

* fix reference to correct units from work package spent units

* linting

* remove outdated spec

* remove outdated views and permission references

* remove acts_as_event from time_entries

There is no atom link for time entries

* remove acts_as_event from projects

There are no atom links for projects

* introduce budget filter for cost reports

* remove actions added to removed controller

* move time entries to the costs module

* factor in view_own permission when calculating time entry visibility

* linting

* move mounting of time entries

* include budgets into api v3 documentation