Initial front end to WIP for custom headers

Likely a pro feature since it gives A LOT of control to the user and the way a bin is served.
Advanced is full width
Merge branch 'master' into feature/bin-options
metadata as feature + title + desc hookup
fixes the codes
Add settings route for posting
Create deepExtend function
Add handlers for updateing settings
Better check for object
Support user configured headers
Sorted the object to index.html
Put saving behind flag
Save bin metadata
Echo back what's saved
Remove blank values
Support PUT on top level keys
Add put route
DUH - fixes destructive save
deep merge the settings
save title, et al