useragent: pass requested fields as map instead of list

Revert the signature of userInputRequested signal to pass
requested fields as QVariantMap instead of QVariantList to avoid
additional manipulations in QML.
remove this property
Merge pull request #16 from lpotter/master

make connman more declarative friendly
networkmanager: delete service and technology objects upon connman's death
Merge pull request #17 from rojkov/master

Delete service and technology objects upon connman's death
Merge pull request #19 from rojkov/useragentapi

useragent: pass requested fields as map instead of list
Merge remote-tracking branch 'upstream/master'
add idleTimeout to networktechnology