Added a Set table with fields for the set number, weight lifted, and number of reps made.  Removed set fields from WeightExercise. Also, changed the weight field of Weight to be a float
Changed the weight field of Weight to be a Decimal number of the form 999.9.  Fixed populate.py to execute successfully with no errors.
Merge branch 'master' of https://github.com/CSc436/gymjournals into 95SetTable
Merge pull request #98 from CSc436/95SetTable

95 set table