Filter projects by manageable
Merge pull request #84 from neighborly/jl-add-manageable-projects-filter

Filter projects by manageable
Merge pull request #85 from neighborly/jl-channels

List channels, change state and destroy
Create channels new/edit controller and routes
Use form data adapter on channel
Create channels new/edit templates
Add link to add new channel on channel index
Add user to channel model as belong_to and configure its serializer
Add other fields to channel model