commented out the terrible redirect hack in the nginx confs, shouldn't be needed now
Initial attempt at testing. Diffs html responses against precached ones from a working instance of tatoeba. Only the front page is tested for now.
added benchmarking script
fixed repository updating in mariadb migration script
removed problematic config file rename in mariadb script
Translations updated via update-translations.sh.
nginx script should stop apache server before installing nginx now
fixed order of copying and cleaning config directories in ngninx script
Added fixtures for the sentence model.

Along with everything linked to it.
Created a simple test for adding sentence.
Fixed $useTable attribute of the CurrentUser model

This attribute can only take false or a string as value.
Fixed the include path of current_user.php.

The include path doesn't work in tests context.
Include Sanitize in the Sentence model.

So that it also work in tests context.
Removed bogus model relationship.

Sentences and Tags are already linked with a HABTM relation.
Fixed parent constructor call parameters.

So that the tests of this model use the test database instead of
the real one.
One more test for sentences saving.
Fixed model relation to TagsSentences in Sentence.

This goes with 434ce3e943b98918e2572a4acd1acd5f8d586716.
CakePHP use the automatic name 'TagsSentence' for the HABTM model,
which misses our 's'.
Merge branch 'tests' into cakephp1.3

Conflicts:
	app/models/current_user.php
	app/tests/fixtures/group_fixture.php