* Email input UX improvements
* Makes email queries case insensitive
* Lowercases all emails
* Type fixes
* Re adds lowercase email to login
* Removes citext dependency
* Updates schema
* Migration fixes
* Added failsafes to team invites
* Team invite improvements
* Deleting the index, lowercasing
```
calendso=> UPDATE users SET email=LOWER(email);
ERROR: duplicate key value violates unique constraint "users.email_unique"
DETAIL: Key (email)=(free@example.com) already exists.
```
vs.
```
calendso=> CREATE UNIQUE INDEX "users.email_unique" ON "users" (email);
ERROR: could not create unique index "users.email_unique"
DETAIL: Key (email)=(Free@example.com) is duplicated.
```
I think it'll be easier to rectify for users if they try to run the migrations if the index stays in place.
Co-authored-by: Alex van Andel <me@alexvanandel.com>
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