remove sqlite3 version specification from Gemfile
Update de.yml

Ich habe einige Dutzend Kommata und Großschreibungen nachgerüstet, einige wenige Tippfehler und Übersetzungen ausgebessert.
Übersetzungen fehlen noch in Zeilen 565, 566 und 1229.
Groß/klein-Schreibung finde ich fraglich in 573, 633, 636, 642, 684, 1407 ff.
Fraglich: 1378 "vor" oder "von"? 1399 "werden" oder "wird"?
Make old migration salting existing user passwords independent of User

Remove code from user, remove test and adapt migration.
Add option to prevent former passwords from being reused

Squashed from single commits:
* Add checks to prevent former passwords from being reused
* Make number of banned former passwords configurable

  Also group settings into fieldsets on the authentication settings
  page.
* Update TestUnit fixtures with UserPasswords
* Add migration for creating user passwords
* Fix new user password not being immediately used
* Add cuke for ban of former passwords
* Fix admin info showing whether admin password was changed
* Fix password check for user without password and fix tests
* Fix password complexity feature after translation changes
* Adapt my_controller_spec to UserPasswords
* Order UserPasswords by id

  created_at is not unique within one second, this breaks MySQL tests.

  id is guaranteed to be unique and monotonically increasing on MySQL
  and on Postgres(at least as long cache is not set for the sequence).
* Rename secure_compare to secure_equals?
* Immediately use reduced number of banned former passwords

  Only check number of former passwords as defined in settings. The
  number of stored passwords per user is only reduced when a user
  updates the password.
* Add missing copyright notices
* Update changelog
Fix _authentication.html.erb syntax
Remove broken Apache authentication module

The move of user passwords to the UserPassword table breaks the
authentication module. We should either add a similar module later
which asks the Rails process to do permission checks or move all of this
to a plugin.
Merge pull request #206 from opf/feature/rails3_ban_former_passwords

Add option to ban former passwords
introduce fading in and fading out timelines PEs
WP without start/end date improvement

- if milestone and one date exists, set equal
- sort: if no start date, use end date
- color improved
- vertical PEs work too (w/ fading effect)
removed test data.
bugfix. smaller elements.
Merge pull request #213 from opf/feature/rails3_timelines_no_dates
move themes code into OpenProject's library
fix a wrong css class regarding themes
refactor themes backend
* extract theme finding code from the Theme class into a ThemeFinder module
* omit a trailing 'Theme' in the class name for default identifier and name attributes of themes
* remove the default? method
* do not rely on AS::DescendantsTracker anymore, although it was nice
Revert "removed test which is not valid anymore."

This reverts commit 9ede533f443e37772e645b15691bbc88d5070e36.
401 standard conformity
added reason to api.
test for the correct response.
rename X-ACCEPT-AUTH=X-Authentication-Scheme, test