IdentityLink null-check

Required when custom identity links are used.
SubProcess ENTITY_CREATED fix
remove @Test annotation from JUnit3 based tests
[Spring Boot] Commenting out Rest Api autoconfig. need to figure out way of making it work on new rest api.
[Spring Boot] Fixing RestApiAutoConfiguration.
Merge pull request #8 from Activiti/master

Merge branch 'master' of https://github.com/Activiti/Activiti
ACT-2141: Persistent isGraphicalNotation flag for process definitions
ReflectUtil.loadClass() and custom classloader
ACT-2141: Fixes for DB2 / Oracle (Thx Tijs for the catch)
[REST] Fix as per http://forums.activiti.org/content/authenticateduserid-no-set-rest-5164
More BPMN parsing
Merge branch 'master' of https://github.com/Activiti/Activiti
Spring boot pom changes
Merge pull request #415 from Activiti/job-executor-work

Spring boot pom changes
New threadpool approach to async jobs
Adding in 5.16.4.0 as previous version of db schema
Job executor changes
jdbc.url for mssql is mistyped

the mistyping may mislead users to waste time on Microsoft SQLServer configuration, as I've found in the following forum thread:
http://forums.activiti.org/content/activiti-installation-oracle-or-mssql#comment-26278
for Microsoft SQLServer JDBC url, "databaseName=" is a must.
[Job executor] Switch to use executor Service interface vs ThreadPoolExecutor (nicer for pluggability)
Merge branch 'job-executor-work' of https://github.com/Activiti/Activiti into job-executor-work

Conflicts:
	modules/activiti-engine/src/main/java/org/activiti/engine/impl/asyncexecutor/DefaultAsyncJobExecutor.java
	modules/activiti-engine/src/main/java/org/activiti/engine/impl/cfg/ProcessEngineConfigurationImpl.java