Sync one by one to avoid timeout

Signed-off-by: Jonas Kalderstam <jonas@kalderstam.se>
Add sync single ability

Signed-off-by: Jonas Kalderstam <jonas@kalderstam.se>
Remove google account stuff

Signed-off-by: Jonas Kalderstam <jonas@kalderstam.se>
Add etag/modified support

Signed-off-by: Jonas Kalderstam <jonas@kalderstam.se>