Blender Git Loki

ProfileWidget sampling and display:
1. Added the ability to sample fewer segments from the profile path than
the number of control points.
2. Added a display for the sampled segment positions in the widget's display.
This isn't an essential feature, but it helps visualize where the segments
will be sampled while keeping the focus on the widget itself.

This commit also includes various smaller changes:
1. Resolving / deleting various TODO comments without affecting functionality
in each file.
2. Rewording and clarifying comments throughout the code.
3. Renaming variable names for better code readability.