Fix EAgreement (don't apply protection checks)

fixes #1644
Remove travis.yml for 1.9 (tests are broken there)

NOTE: When merging into master, make sure to preserve the file in master!
Add script to "undo" account merges

- Only covers a few fields (the ones we needed to undo a certain bad merge)
- Room booking needs to be checked manually (not handled at all so far)