Follow the strategy of https://issues.openmrs.org/browse/TRUNK-5816 to migrate web and webapp package tests but of course including the things we learned

Commited Code

• https://github.com/openmrs/openmrs-core/commit/8676bea7f0cd55a92e7bac4cc110e777e4d13762 removal of webapp parametrized test that runs no tests
• https://github.com/openmrs/openmrs-core/commit/544d32c8abb7aa6478dad28b4ddc2bca5bb610ef first unit tests that migrated
• https://github.com/openmrs/openmrs-core/commit/45204cbafdc631f7f4163065c9aec41efa767098
• https://github.com/openmrs/openmrs-core/commit/ca23425a3c6688edeee13a9609418f96e3865110
• https://github.com/openmrs/openmrs-core/commit/ea8bbc6b819230d72585dafe678cbc13d7229efa
• https://github.com/openmrs/openmrs-core/commit/defefc82072aecaffc7b0c3f9b1f549e1e625805 removed last usage of powermock by introducing a DatabaseUpdateWrapper