Add vim swap files to .gitignore
Revert "Interpolation of height with fifth order polynomials"

This reverts commit da10c2d6f54c657a2c8193deb66eaabba34a8745.

Conflicts:

	src/FootTrajectoryGeneration/FootTrajectoryGenerationStandard.h
	src/FootTrajectoryGeneration/OnLineFootTrajectoryGeneration.cpp
	src/FootTrajectoryGeneration/OnLineFootTrajectoryGeneration.h