Rename inappropriately named function.
Work in progress on improving the camera control interface
Fix vertex winding (and hence normal direction) on the bottom of the cube.

Credit to Randall Britten for finding this (see pull request 2).
Merge Randall's changes from pull request 1 and revert shader changes that are not needed with them.
Merge branch 'master' of https://github.com/A1kmm/webgl_pca into touch_screen_rudimentary

Conflicts resolved manually: Main.elm