gsettings: Move schemas to data directory and add autotools bits
gsettings: Remove duplicate schema and update Makefile.am

There where some missing in Makefile.am so adding them in.
gsettings: Fixup the gschema files so they are valid

Replace underscore (_) with hyphen (-), lower case and hyphen are only valid
Add path where missing and add trailing slash (/).
Small corrections to the default values of keys

Todo:
1. Update code to reflect new key names with hyphen instead of
underscore.
2. Figure out what type of data is stored for Sdp. Currently made it a
string so it builds (but will for certain fail when used).
gsettings: Update all modules with the changed key names

Also updated all the ui/builder parts as some use the key
to pull in the correct gtk object.