Fix or remove OpenStreetMap about gmapcatcher

[heldersepu]

if they are blocking the User-Agent we should not circumvent , just use a different provider

Looks like they do intentionally. But still my fav is OSM. Even they mention in their wiki that downloading tiles is possible using many apps, but for some reason not mentioning your app. Luckily they offer many more apps suggestions both for detailed real maps and navigation for all systems, some of which may be more efficient than images only. Still don't see reason why would block this app.