AURORA-278: Review Incubator release checklist - missing license headers

Adds missing license headers for sh, js and py files as well as updates
the LICENSE for jquery in src/main/python
Revert "AURORA-29: Clean up resource files under src/resources/org/apache/"

This reverts commit ad35931b2540372b5449ec5083b6473c4a61dfd1.

Testing Done:
./pants src/test/python/apache/aurora/executor:executor-large -vxs

...

=========================================================== 15 passed in 42.15 seconds ===========================================================
Writing log files to disk in /var/folders/4d/9tz0cd5n2n7947xs21gspsxc0000gp/T/tmpyFCRNS
src.test.python.apache.aurora.executor.executor_builds                          .....   SUCCESS
src.test.python.apache.aurora.executor.gc_executor                              .....   SUCCESS
src.test.python.apache.aurora.executor.thermos_executor                         .....   SUCCESS

Bugs closed: AURORA-14

Reviewed at https://reviews.apache.org/r/19958/