Initialize work
Merge branch 'master' into feature-split_views

Conflicts:
	Builder/Admin/BaseBuilder.php
Merge branch 'master' into feature-split_views
[WIP] Split generated views: work on list
Merge branch 'master' into feature-split_views
Merge branch 'master' into feature-split_views
Merge branch 'master' into feature-split_views
Merge branch 'master' into feature-split_views
Merge branch 'master' into feature-split_views
Fix upload collection field
Merge pull request #548 from skrobek/parent-sync

Fix upload collection field
Update EchoExtension.php

Treat any form type starting with `collection` as collection type. This allows to create new types based on collection, and if they follow the nameing convention `collection_mytypename` their `type` option will be properly loaded.
Update EchoExtension.php

If widget name starts or ends with "collection"
Update EchoExtension.php

Fix copy-paste error
Merge branch 'master' into feature-split_views
Manage nestedlist views separation
Upgrade doc
[2.3] Remove deprecated calls (take care, this breaks compatibility with 2.2)
Use new method to handle form submission
Split edit and new views