Cytools

Updated installation method, added update scripts, and changed how mosek license is checked

Minor bug fixes and improvements.

- Changed the location of the Mosek license file so that it persist after updating to new versions of CYTools.
- Changed the port that Jupyter uses so that multiple users can use CYTools on the same computer at the same time.
- Changed some build parameters to prevent possible build issues.
- Fixed a few rare bugs.

Fixed a few bugs, including a bug in the Windows launcher that cause the initial directory to be in the wrong place.

Added a few new functions including one that finds reflexive 2D subpolytopes of 4D reflexive polytopes and one that computes the volumes of generators of the Mori cone at a location in the Kähler cone.

Fixed various bugs that were affecting CICYs, especially when trying to set a generic basis of curves or divisors.

Made some changes to the Makefile so that old versions of CYTools are deleted before building a new image, and so that Docker doesn't keep a cache of intermediate images.

Made the basis-finding algorithm a little more robust.