chore(Transfomer): Merge Transformer into webapp

related to CAM-1219
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
chore(upgrade-sql): remove no longer required create index statement
feat(engine-rest): add retrieval and adding of identity links

related to CAM-1201
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
fix(engine): businesskey is missing in history of called process

- rewrote code so businesskey is passed in before startprocess history event is fired
- improve call activity testcase to include history tests

related to CAM-1229
feat(engine-rest): add deletion of identity links of tasks

related to CAM-1201
fix(engine): missing test for businesskey is missing in history of called process

related to CAM-1229
impr(engine): subprocess instance business key

- re-add
  org.camunda.bpm.engine.impl.pvm.delegate.ActivityExecution.createSubProcessInstance(PvmProcessDefinition)
- Testcase: make sure history assertions are only executed if history
  level > NONE

related to #CAM-1229
refactor(example): remove process archive name

- remove process archive names such that default names (names of process
  application) can be used. This makes sure that duplicate filtering works.

related to #CAM-1233
fix(cockpit): add missing ${prefix} in queries

- add missing database table prefix placeholder to mybatis queriers (where
  it was forgotten).
- add maven profile for running testsuite with database prefix

related to #CAM-1238, merge(7.0)
fix(build): update pom files missed during release build to new version
chore(cycle-mssql12): update hibernate to 4.2.0.SP1 for MSSQL2012 support
fix(ldap): support user search by groupId

- support searching for users by groupId.

related to #CAM-1152, merge(7.0)
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
fix(ldap): user can see own profile without auth

- make sure LDAP user is able to see his own profile without explicit
  authorization.

related to #CAM-1251
chore(sql-scripts): add update scripts from 7.0 to 7.1
fix(db-upgrade): update db-upgrade test for 7.0 / 7.1
chore(sql-scripts): add update scripts from 7.0 to 7.1
fix(tasklist/multi): Fix multi selection

- fix multi selection of tasks by using a checkbox
- fix bulk operations to delegate or to unclaim selected tasks

related to CAM-1207