remove initial_story_points concept

remove locales
remove burndown_days from RbRelease. TODO: migrations

remove burndown_day
drop release_burndown_days table, initial_story_points column and add a simple pull-in migrator for old releases
add status to release to control visibility, add description to release, define RELEASE_SHARINGS seperate from VERSION_SHARINGS to be independent of redmine
release view: move closed sprints below release backlog
add partial _sprint for last commit
fix find_options for sprints, they must render stories regardless of their release
fix bulk edit for issues of mixed projects or when there is no open release
travis
fix down-migrations
backport from epics: break down menu generating code

Conflicts:

	app/controllers/rb_master_backlogs_controller.rb
correct "new story" menu for shared releases
Obey workflow for user and task tracker(s) on taskboard. fixes #735

move workflow state transition generator to a helper
allow tasks to change their story within the same project. fixes #785
provide visual feedback for disabled  drop-zones on taskboard
revert accitential comment, we need helper: clone for firefox
allow skipping rebuilding history -- do this at your own risk
fiddle with timings and timeout for tests to work even with the jquery.sortable revert option
v0.9.33
use mousedown/mouseup events, sortable cannot be disabled in dragStart