Moved invalid email testing to separate test.
Made all the emails used to have .test domain.
Added links to regex resources.
Change-Id: I26920ba7360064528256a6aeaea947bbe56ef618
Reworked email validation for new users (for old users trying to login or reset password validation remains the same).
Regular expression was built according to RFC 5322 and then extended to include international characters.
Change-Id: Id0224fee21a1ec0f8a2dcca5b8431197dee6b9d3
Each test doesn't need to be in a separate file.
Keep naming consistent such that relevant tests can be run together.
Also skip test that do not work at the moment.
No functional changes.
Change-Id: Icd314d383ec5b683dea8afaaf2790e2e4b306671
