Add new app eu.domob.shopt.
Merge branch 'shopt' into 'master'

New app: eu.domob.shopt

This adds the metadata for my freshly released app "Shopping Optimiser", aka eu.domob.shopt.

See merge request !307
Flashlight: Remove duplicated URL
K-9 Mail: Prepare for upcomming gradle builds
Shopt: Update description; set AUM.