speed improvements.
changelog merge corrected.
removes remote_form_for from admin's user edit panel, so we don't get 2 requests on all actions
adds a id to the new membership form inside admin's user edit panel
tests for admin's user membership edit
Changelog entry

Conflicts:
	doc/CHANGELOG.md
Introduces start and end date generation in seeds.

Work packages previously had no start or end date. This is now fixed.
Also, type used to be settable via mass assignment, which is now broken.
Merge pull request #404 from opf/fix/admin_users_form

Fix/admin users form
Merge pull request #447 from opf/fix/seeds
fixed changelog entry
new datepicker.
hide datepicker.
remove all old files.
changelog.
blur input field. remove calendar.js requirement.
Renames issue_from
Renames issue_to
Merge pull request #410 from opf/fix/timelines_speed
fix language selection bug.
Merge pull request #432 from opf/feature/rails3_new_datepicker

new datepicker.