remove  translations for unsupported languages

At the moment we are a relatively small community. We don't speak most
languages, which where supported previously. This resulted in a lot of
differences in quality and quantity of our translations.

We happily add languages again, if we find a maintainer for that
language.
Fixes waiting for Ajax in Cucumber:

* old implementation did not actually wait,
  but just checked once whether jQuery or Prototype provided
  any signs of ajaxy activity. It did not actually do anything
  with this information.
* the new implementation waits (busily!) 'til PT and jQuery
  have no signs of ajax anymore. If that takes to long,
  it'll raise Timeout::Error.
Merge branch 'feature/rails3' into feature/rails3_drop_translations_we_cannot_support_at_the_moment
fixes failing cuces
ajax without session gives us a popup.

the popup asks if we want to redirect to the login page.
Adds a test for circular structures.

acts_as_tree does not check for circular structures in the models it is
invoked on.
Disable autocompletion for login forms and password fields
removes vendored acts_as_list

The patch applied on it was moved to a separate module which is loaded
during initialization.

In order to have all the classes using acts_as_list receive the patch,
it is necessary to load the patch as early as possible. Hence the patch
is loaded in 10-patches.
fix step definition for checking the sorting inside a table

first-child seems to be broken right now.
sorts enumerations for destruction

This way, it can not occur that an enumeration is already deleted along with it's parent (default acts_as_tree implementation)
Merge pull request #172 from opf/feature/rails3_remove_bundled_acts_as_list

Feature/rails3 remove bundled acts as list
Adds validation concerning circular structures.

Infinite tree fetching no more.
Update CHANGELOG.rdoc
Defer callback registering until after the DOM has loaded.

This is required to enable the callback for AJAX functions in plugins.
Merge pull request #171 from opf/fix/circular-structures

Adds a test and validations for circular structures.
[OPF #907] special version instead of sha1

on admin info page

- moved ChiliProject::Info in OpenProject namespace
updated core special version
[OPF #713] fixes issues description layout

- remove inheritance of font defined in reset.css
- the whole site was affected by this rule, not only the issue
  description
Fixed ambigious cucumber match of login steps
Changed "click on" step to only click on visible elements to prevent
ambigious capybara matches