convert animations to less

This is the first step in converting all the animations into LESS/SASS.
At the moment there's only LESS, but as soon as this is finished, SASS is going to be the next step.

The next step would be to create re-usable components for creating the animations as I saw some of them are repeating themselves, like "fade" for example, that animation could be done in 6 lines rather than 300!
My intention was to have them as LESS for now and a structure to work with.