654 single source mandatory

Description

Users won't able to leave the settings page without selecting any app source. String Resources Updated

Issue(s)

backlog/-/issues/654
backlog/-/issues/282

Test environment

Gradle build against 654-single_source_mandatory branch, install the apk into the device

Test procedures

Go to settings page -> unselect all app sources -> try to leave settings page -> a warning dialog should appear

User should see headers for open source and pwa categories in homepage with prefix Open Source and PWA

Technical details

Screenshots

Check list

• Self review
• Test procedure explained
• Tested on fresh install
• Tested applied as an update
• License
• Internal documentation
• User documentation