Revert b/c I broke login page, revert to "php checks if a group already exists before creating a new group"

This reverts commit 4cc09ea4297b6da8b19edbd9437a2503a7ffae0c.
Changed new member button for new member link
Savi pushed a bunch of code to log in users, send email password resets, and make the pages look pretty.
Merge branch 'master' of https://github.com/CSUChicoSoftwareEngineering/android
Merge branch 'master' of https://github.com/CSUChicoSoftwareEngineering/android
Savi commited more login scripts
Merge branch 'master' of https://github.com/CSUChicoSoftwareEngineering/android
Added Email password reset classes