[connman] ofono: Submit the next SetProperty("Active") in any case

Even if the previous one failed. It's hard to imagine any harm out of it
while positive recovery scenarios are conceivable.
Merge pull request #165 from monich/next_request_on_error

ofono: Submit the next SetProperty("Active") in any case
[connman] stats: Don't complain about write errors too loudly

Otherwise journal gets flooded with error messages if the file system
gets full which makes things even worse.
Merge pull request #166 from monich/dbg

stats: Don't complain about write errors too loudly
Revert "[connman] fix crash when dbus message is NULL"

This reverts commit 7cc3b8b0fa39343fcd12a52b14c87b805464f636.
agent-connman: Fix crash due to NULL D-Bus reply message

When an outstanding request browser call is cancelled, the D-Bus reply
will be set to NULL. Check the reply message before acting on it.
Merge pull request #167 from tigeli/replyfix

[connman] browser_reply_data->callback needs to be called also in the cancelled case