Updated LDP support

* Added more extensions
* Fixed use IN for fast execution
* Fixed compatibility with cimba.co
* Fixed meta and acl links
* Fixed use IRIs to match current domain
Fixed DAV api is expected to import turtle in the rdf store
Merge remote-tracking branch 'upstream/develop/7' into develop/7
Fixed send signal to have error in error page instead of silent exit with 500
Fixed issue with checking existing OAUTH registration keys
Fixed permission error
Fixed keep bd readers intact
Fixed when CORS enabled, print relevant headers to be read by app
Fixed LDP over writable DETs
Added new system property virtpubliclink for DAV
Fixed redirection for containers, use API in case of DETs
Merge remote-tracking branch 'upstream/develop/7' into develop/7