reworked auth token to get mdigest token for each method/uri

hopefully that works, now.
small code restructuring in auth-part of service assistant
added more "no retry" cases.
small log improvement
fixed error in contact to vCard conversion
0.3.15
Merge remote-tracking branch 'origin/morphis/fixes' into Garfonso/work
Merge pull request #55 from webOS-ports/Garfonso/work

0.3.15