update documentation for provisionning profiles
Select typos from Christos and Dan
Merge branch 'AGPUSH-850.update.ios.doc'
Adding new java sender api docs
removing no longer needed rest specs
Adding newly generate JAX_RS doclet files
Adding new versions and maven_central links
Removing outdated spec (replaced by new doc)
Getting rid of outdated user mgmt spec, since we now have Keycloak
Cleaning the specs TOC