Loads signature data from a json db file. This reduces maintainance with very large signature sets
Merge branch 'overlay_for_signatures' of git://github.com/Thorsten-Sick/cuckoo into Thorsten-Sick-overlay_for_signatures
Move the overlay code around a bit to a hopefully more appropriate location.
move json import to the right place, and remove dangling method calls
add debug message and example overlay file