Revert "Tempoarily dissable activity delta updates"

This reverts commit 70b0e3756954b5ea867e14de771b7d8ec2cb87e7.
Apply free text search to aktivitet description
Add date range query refactor reminder
Apply free text search to aktivitet code
Merge branch 'aktivitet-text-search'
Moved text search to bottom and apply on focusout
Shorter lines
Hide parameter "close to location" from mobile users
Removed unused class
Disable select2 on organizer and area fields on mobile
Add padding to bottom on mobile, because of fixed footer
Replace JS datepicker with native on mobile
Fix date formatting before passing to server
Merge migration state for aktiviteter
Add turbasen app
Add initial NTBObject
Add område datatype model
Make lookup methods static
Convert område lookup to partial objects
Refactor _partial => _is_partial