First round of tests, for team and application.
Adds initial Entity changes for 2.1 JSON standardization.
Adds WAF and scan REST format tests.
Adds Vulnerability tests and makes changes to entities and rest controllers so that the tests pass.
Adds waf field to returned Application JSON.
Adds @Nullable annotations to RegexUtils.java
Merge branch '2.1M2' into 2.1-rest-standardization
Merging changes to get the improved ZAP importer for documentation

Conflicts:
	threadfix-importers/src/main/java/com/denimgroup/threadfix/importer/impl/AbstractChannelImporter.java
Makes AllViews classes interfaces, removes scanner detail and recommendations from Finding, and updates the ScanTests.
Adds @Nullable annotations to RegexUtils.java
Merge branch '2.1-rest-standardization' into 2.1M2