Standardize Toes-to-Bar scaling to one clean progression (Hanging Leg Raise included, no Knees-to-Elbows)

Two inconsistent TTB chains existed and one duplicated Hanging Knee Raise. Unify
all 42 to: RX/ADV+/ADV Toes-to-Bar, INT+/INT Hanging Leg Raise, BEG+ Hanging Knee
Raise, BEG Laying Knee Raise. Matches the documented progression order.

Author: OneMuppet