Meaningful exception message.
Merge pull request #389 from pedroigor/master

Meaningful exception message.
[PLINK-581] - EntityManagerProvider is throwing NPE when EntityType.getJavaType() returns nulll.
Merge pull request #390 from pedroigor/master

[PLINK-581] - EntityManagerProvider is throwing NPE when EntityType.getJ...
[PLINK-582] - Better message when failing to create default partition during startup.
Merge pull request #391 from pedroigor/master

[PLINK-582] - Better message when failing to create default partition during startup.
[PLINK-585] - Send status code 204 when performing logout from AJAX client.
Merge pull request #392 from pedroigor/master

[PLINK-585] - Send status code 204 when performing logout from AJAX client.
[PLINK-585] - Send status code 204 when performing logout from AJAX client.
First step
Formatting change
Formatting change #2
Authorizer for levels
Authorization of levels
Context management
Asynchronous check of the contexts
Formatting change
Another formatting change
Fixed bug of logging out
Corrected error with reauthentication