BDD: add delete ContentTypeGroup implementation
BDD: update iSeeContentTypeGroup to verify also through API
[Travis] Simplify test matrix

- As unit tests on 5.3.3 are broken, move it out and only care about
integration tests there until it and 5.3 is soon removed (RHEL7).
- Remove Solr 3.6, mnot interesting now that we got legacy upgraded
to Solr 4.x.
- Move TimeZone out of matrix to make it slightly more readable.
- Update to use solr 4.7.2, similar as used in ezfind.
BDD: grab rest_url passed from behat.yml
Remove extra space
Merge pull request #855 from ezsystems/simplify_travis_matrix

[Travis] Simplify test matrix
Merge pull request #856 from MLoureiro/pass_url_to_rest

BDD: grab rest_url passed from behat.yml
EZP-22617: Implement ISBN FieldType
Fix EZP-22617: Added tests (unit & integration)
CS
Fixed for unit tests
Fix EZP-22617: Use get function on fieldDefinition as assumed by tests
Fix EZP-22617: Add API integration test for ISBN and fix missing parts
Fix EZP-22617: Add Solr indexing config + cs
Phpdoc typo fix in API Criterion LogicalNot
Merge pull request #843 from dymissy/patch-1

Phpdoc typo fix in API Criterion LogicalNot
Merge pull request #853 from MLoureiro/bdd_delete_contenttypegroup

Bdd delete contenttypegroup
Fix EZP-22617: Move validation, make strict and remove left overs

Fixes review remarks.

In restrospect this field type should have been based on TextLine or
similar FielType, most of the issues with getting this to work properly
can be attributed to the fact that it was copied from Country which has
a different data structure and different validation needs.
Fix EZP-22617: Add ISBN setting block in fielddefinition_settings.html.twig
Merge pull request #852 from ezsystems/ezp22617

EZP-22617: Implemented ISBN Field Type