Bug fixes

- Made a few PP GraphSearch API methods more flexibly usable
- Added a method to the PPT API to get all available classifiers (available from PP 6.2 on
- Added a custom SPARQL API built on top of the EasyRDF SPARQL client
- Added a method to get all SPARQL endpoints of a PP server connection
- Moved the 'visual_mapper_exists'-Method from the SmartGlossary module to the Semantic Connector to allow global usage
- Added APIs + support for PoolParty 7.0
- Fixed PPT method getConcepts() for more than one concept

Development branch release, testing is needed before new RC is released.

fix typo in js. switch to crop->position()

Issue #3008343 by nmitev: Submit handler never attached

Fixes #3007388: Drupal 7 and PHP 5 compatibility

- Removed a dependency to example payment interface.