Update issue and PR templates
Facilitate JIRA linking
Add checkbox for new dependencies
Small text for license checkbox info
+**JIRA Ticket:** https://issues.apache.org/jira/browse/UIMA-XXXX
+
**What's in the PR**
* ...
* ...
**Automatic testing**
-* [ ] PR includes unit tests
+* [ ] PR adds/updates unit tests
**Documentation**
-* [ ] PR updates documentation
+* [ ] PR adds/updates documentation
+
+**Organizational**
+- [ ] PR includes new dependencies. <br>
+ <sub><sup>Only dependencies under [approved licenses](http://www.apache.org/legal/resolved.html#category-a)
+ are allowed. LICENSE and NOTICE files in the respective modules where dependencies have been
+ added as well as in the project root have been updated.</sup></sub>
