Fix DateTime renderCell
Unable row modification in manipulateRenderCell function
Update DateTimeColumn.php
Add class attribute and remove unless variables
update spanish translations
Merge pull request #530 from nclsHart/spanish-translations

Fix #492 update spanish translations
Added czech translation file
Merge pull request #532 from ufik/czechTranslation

Added czech translation file
Update set_permanent_filters.md
Update PHPExcel_installation.md
Makes the Vector class able to ready PHP DataTime objects. It's very hand when it's comming from a Doctrine query
Merge pull request #536 from medinadato/master

Makes the Vector class able to ready PHP DataTime objects. It's very han...
Fix html input type url
Update vector_source.md
Add hasColumn method to Grid in order to check if a column exists in both 'columns' and 'lazyAddColumn' properties before processLazyParameters is called
Merge pull request #549 from cyrilbarragan/master

Add hasColumn method to Grid in order to check if a column exists in bot...
Update README.md
Introduce ability to on entities to have a column which is an aliased column, via the isManualField and isAggregate attributes on the column.  Updated the entity source to not add these columns as they are already added by users.  Lastly Updated the hasDQLFunction call to include if it is an aggregate (as that means it has a dql function the user manually did).
Added brackets for statement.
CS fixes.