acra: Count the number of successful "Add New VPN" operations

I receive a fair number of problem reports that look as though the user
never even tried to add a VPN entry, and the log section is completely
empty.  By tracking "num_profiles_added" these can be automatically
filtered out.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Update changelog and bump version to 1.00 (1000)

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>