Refactored out load_data
Merge branch 'master' into xbombers
Added intel_bombers
Add stats to intel_bombers screen
Add intel_targets
intel_bombers: show only available and obsolete bombers, not future ones
Use a proper intelbtn for the bombers' intel links
intel_targets: Show tclass/iclass.  Improve layout
A couple of 'state' parameters are no longer unused
Added fighter art for the Me262 - that's the lot
Fix erroneous code in failure handling path
Added intel_fighters
Add side-view art for the Avro Manchester
Add side-view art for Messerschmitt Bf109E
Swapped the order of intel_targets and _fighters; trivial Makefile refactoring
Slightly altered layout of intel_targets

Had to re-justify dat/intel to 107 columns.
Added some more targets intel (mostly shipping)
Used @City references to associate Leaflet targets with their cities
Added some more targets intel
Added side-view art for Dornier Do17Z