Fix typo in dashboard.rst
Minor documentation fixes.
Fixed dev dependencies in composer.json

Since jms/translation-bundle is only working with sf 2.2 from
version 1.1.x-dev, I updated the composer.json file to add the
@dev flag to the translation bundle version definition.

Now the --dev requirements can be isntalled again.
Implemented ConstraintValidator::validate()

Since version 2.1 of symfony/validator, ConstraintValidator::isValid()
is deprecated an triggers an E_DEPRECATED error.

Unfortunately the error handling in some circumstances triggers
SIGSEGV in PHP-FPM (I havn't been able to pinpoint the exact cause).

Now isValid() is just a BC wrapper for validate() not triggering any
errors.
Fix ukrainian translation
Merge branch 'fixuktranslation'
Added a basic builder interface that abstracts out the fix field description method
Added a simple base mapper that holds some common fields
Added a grouped mapper to handle mappers that group fields together
Added button templates to reuse in the various view templates
Fixed formatting
Merge pull request #1309 from ddebree/action_buttons

Added button templates to reuse in the various view templates
Merge pull request #1308 from ddebree/parent_classes

Mapper Parent classes
Typo in class name

Fix after Merge pull request #1308 from ddebree/parent_classes
Merge pull request #1341 from dkorsak/patch-2

Typo in class name
added some missing translations
Update composer.json
Merge pull request #1346 from ehsan89/patch-2

added some missing translations
Merge pull request #1301 from spolischook/master

Fix ukrainian translation
Merge pull request #1298 from tPl0ch/hotfix/composer-dev-requirements

Fixed dev dependencies in composer.json