Feature: rename image

[andi34]

Re-added #614 , picked latest changes from remote branch with slight modification (no virtual keyboard function yet). Also squashed changes to limit commits for a better overview.

Todo:

• [ ] formatting on language resource
• [ ] don't add images to gallery automatically

[stale[bot]]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 2 months. Thank you for your contributions.