Added head_title block to standard_layout.html.twig

Change the name of the block to sonata_head_title
Added test for SonataAdminBundle and configureQuery in AdminEventExtension
Merge pull request #2258 from pulzarraider/bundle_test

Added test for SonataAdminBundle and configureQuery in AdminEventExtension
Merge pull request #2259 from greg0ire/doc_improvements

Finished proofreading the book. Say squash if it's ok.
set x-editable container to body

because there is an issue on iOS (maybe some other small screen devices) when using the .table-responsive class for the admin list
Merge pull request #2263 from toooni/patch-1

set x-editable container to body
Update SonataAdminBundle.pt_BR.xliff
Merge pull request #2267 from cassianotartari/patch-6

Update SonataAdminBundle.pt_BR.xliff
Merge pull request #2115 from pulzarraider/patch-3

Added head_title block to standard_layout.html.twig
update the SonataAdminBundle.ar.xliff
Merge pull request #2271 from Arkni/patch-trans

update the SonataAdminBundle.ar.xliff file
Update recipe_file_uploads.rst
Merge pull request #2279 from xorg-robur/patch-1

Update recipe_file_uploads.rst
Added sonata_type_model_autocomplete form type

Added support for many-to-many in sonata_type_model_autocomplete

Changed `collection` form type to `sonata_type_native_collection`

Fixed unit tests

Fixed issues with Sf 2.3

Fixed dates in changelog

Fixed minor issues

Make code more universal.

Another improvements. Fixed bugs in paging.

Added toStringCallback option. Fixed datagrid parameters.

Fixed unit tests

Improved code coverage of Datagrid

Improved doc and added some more tests

Fixed CS
Merge pull request #1764 from pulzarraider/sonata_type_model_autocomplete

sonata_type_model_autocomplete form type (autocompletion for too many items)
use first person on each item

consistency is important.
remove abbreviations
add missing article
avoid long lines
use better verb