Model and basic controllers for stats
Minor fixes from jhint
Attempts to rework exercises aggregation
Map aggregation of workout results
Minor fix
Minor fixes
Attempts to create proper route'ing
exercise.title -> exercise.id inside update service
fix
fix
Revert "fix"

This reverts commit 8434f0787b60e4a2916531f4f2c1109f4efd6fd8.
possible fixes
changed to separate stats
missed file in commit
Fixed iteration over exercises
Merge branch '72062654-exercise_stats_for_user' into 72062688_charts
getting stats and mapping to usable form
exercise id -> name translation
fixed Exercise.Id
Merge branch '72062654-exercise_stats_for_user' into 72062688_charts