1) Checking in all necessary changes to acommodate the new luci-pbx-voicemail package.

1) Checking in all necessary changes to acommodate the new luci-pbx-voicemail package.
   - Creating configuration with pbx-asterisk
   - TEMPLATE files
   - Including record voicemail greeting context in user extensions.
   - Redirecting incoming calls which were not picked up through the voicemail
     recording context.
   - Putting a configurable timeout before either hanging up if voicemail is disabled or
     redirecting to voicemail if it is enabled.

2) Improved DISA by setting longer timeouts for start of input and digits.