Merge pull request #116 from abdulrauf/3.0

3.0 	support for multiple custom js/css files for backend
Merge pull request #118 from abdulrauf/3.0

embed name - alias
Merge pull request #120 from abdulrauf/3.0

duplicated path/slugs issue
Merge branch '3.0' of https://github.com/Gluttonberg/core into 3.0