Merge pull request #53 from thefinestsieve/beta

More CTA ambition icons
Decoupled CTA from PB to ease maintainability

Modified structure will make it easy to merge new versions of NDE into
PB that have [some version of] CTA directly integrated.
Merge pull request #54 from zijistark/cta-decoupling

Decoupled CTA from PB to ease maintainability
Merge branch 'beta' of https://github.com/Meneth/PB-git into beta