Content Provider Helper

This helper is a frontend to query installed content providers. Android's
content providers are similar to database tables.: They have a name (aka
"content:" uri), columns and they can be queried similar to SQL.

Android uses
content-providers as API to manage global accessable data (i.e. images, address
book, text messages, ...).

Forked from jenzz-s
ContentProviderHelper which is not maintained anymore.

App permissions are set generously to provide maximum compatibility.