Greyson Parrelli e4b56d4e40 Show foreground notification for jobs when network is restricted.
Occasionally a job may be run when the app is in a network-restricted
mode, like a form of doze. When this happens, jobs can timeout due to
lack of network access, causing a cascade of job delays. This is
particularly bad in the case of message retrieval.

To prevent this, if a job that normally requires network detects that no
network is available when running, then we start a foreground
notification.
2018-10-03 10:00:42 -07:00
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