refactored pathway path datastructure; some work on bubblesets in
pathway.v2
Merge branch 'develop' of https://github.com/Caleydo/caleydo.git into develop
further work on path selection/bubblesets in pathway.v2
Path extension and bugfixing in pathway.v2
Now rendering a separate bubbleset per path segment in pathway.v2
pathway.v2 now listens to path events
Can no display and switch between alternative paths in pathway.v2; some
bug fixing
Improved alignment of bubblesets when shrinking pathway.v2; visual
improvements to bubblesets
Merge branch 'develop' of https://github.com/Caleydo/caleydo.git into develop