Hans-Christoph Steiner eb6ab1ec0a when storage is low, immediately trigger CleanCacheWorker run ...

refs #1869

Script to test this in an emulator with `adb root` in `adb shell`:
```bash
cd /data/data/org.fdroid.fdroid.debug/files
rm -f fake.apk; touch fake.apk;  chown u0_a159.u0_a159 fake.apk ; dd if=/dev/zero of=fake.apk bs=1M count=635; touch -d 2020-02-02 fake.apk ; df -h; ls -lh
```

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2021-03-03 18:49:47 +01:00

..

src

when storage is low, immediately trigger CleanCacheWorker run

2021-03-03 18:49:47 +01:00

tools

…

build.gradle

version code 1012001

2021-02-25 21:53:06 +01:00

lint.xml

…

proguard-rules.pro

set up WorkManager on demand to avoid slowing down starts

2021-02-23 13:28:32 +01:00