[BIOCAT-856] Added contexts category as per GFBio requirement
Revert "[BIOCAT-856] Added contexts category as per GFBio requirement"

This reverts commit 3c1d4983c9f6a4b9010dd5186ea0c4a4020ab65b.
A hack to cope with example URLs in annotations that containe spaces.
Merge branch 'master' of github.com:myGrid/biocatalogue
Merge branch 'biocat-master' into biovel-master