Merge pull request #6 from spotfinder/mike

Removed the return to index button
linking the sign in and sign up form
Merge pull request #7 from spotfinder/karina

linking the sign in and sign up form
schemas for all tables done
Merge pull request #8 from spotfinder/karina

schemas for all tables done
Added Login button

added if user is logged in drop down menu and changed buttons on index.
Merge pull request #9 from spotfinder/grace

Added Login button
added yield top-script section in master
Merge pull request #10 from spotfinder/grace

added yield top-script section in master
changed margin for register form