first implementation of torpedoes
firing working, as is detonations
introduce the ability to fire down the bearing of a current sonar contact
introduce tooltip to explain torpedo options
* introduce count of remaining torpedos
* include torpedo template in scenario
introduce weapons mission
get scenario moving forward more quickly
first implementation of torpedoes
Merge pull request #15 from IanMayo/features/ian/torpedo2

Introduce two types of torpedo, plus a scenario to test them against.