Bump dependency versions

- bcrypt from 0.17.0 to 0.18.0
- chrono from 0.4.40 to 0.4.43
- diesel from 2.2.8 to 2.3.5
- diesel_migrations from 2.2.0 to 2.3.1
- sha2 from 0.10.8 to 0.10.9
- uuid from 1.15.1 to 1.19.0

Adds /passwords/?search=<id> endpoint

This new endpoint is required for the latest version of the LessPass
browser plugin. It does a search by site in the database.

Disables test stage on CI since it has concurrency problems

Fixes a typo in a message

Adapts the code to update diesel to v2

Fixes password profile saving from mobile applications

- A workaround is added so that mobile applications do not crash when
  sending a new password profile.
- Adds /auth/users/me/ endpoint that returns information about the user.

Bump version to 0.7.1

Migrate to GitLab

Response always in JSON format

Improve tokens and update Rocket

- Now the access and refresh tokens are different and have their own
  lifetime each.
- Updated code to use Rocket v0.5.