- buttons are now stored in the same table
- answer ButtonTemplateReqMessage with ButtonTemplateMessage: DONE
- answer SoftKeyTemplateReqMessage with SoftKeyTemplateResMessage: WIP (currently empty response)
- answer SoftKeySetReqMessage with SoftKeySetResMessage: WIP (currently empty response)

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@16769 d0543943-73ff-0310-b7d9-9358b9ac24b2