"Sync only when connected over WIFI" option

[gryzor2]

Basic Info

• I'm running Cryptomator on: [doesn't matter]
• I'm using Cryptomator in version: [0.2]

Description

An option to sync only when connected over WIFI would be very sweet.
Maybe this option could even be splitted in 2 :
"Upload data only when on WIFI"
"Download data only when on WIFI"
Locally generated files could be kept encrypted in some temporary storage place, in the while.

Hope this is not too intrusive in the app architecture.

[markuskreusch]

Currently we only download and upload files at the time the users accesses a specific file. I think this is more or less related to #24 . When we implement #24 we will need some kind of Sync. Currently we do not synchronize the files from the cloud to the device.