Un-break the login screen.
Un-break the login screen.

Create a DatabaseHelper only after we know the user's email address.

The better fix will be to split login into its own activity.

saketkumar95/zulip-android,Sam1301/zulip-android,abhaymaniyar/zulip-android,abhaymaniyar/zulip-android,zulip/zulip-android,prati0100/zulip-android,Sam1301/zulip-android,vishwesh3/zulip-android,prati0100/zulip-android,saketkumar95/zulip-android