added foreign key constraints to createTables.sql; removed bodyParts table;
resolved conflicts on user table in createTables.sql
re-added fname, lname back...oops
more userQueries added
Removed NOT NULL from fitlvl fk in user table (previously done by Andrew, now know why)
added most of the AJAX-server functionality; removed time field from log table
Small commit
Merge branch 'master' of https://github.com/jpr0930/WorkItOut
Fix small php bug in index.php that caused page not to display