spawns

created spawn concrete entity and list of spawns in gameworld

need test of getspawns
Tanks Respawn

tanks respawn after 10 hits

need to write unit tests still
Spawn tests

adding unit tests
Merge pull request #335 from BU-CS673/production

Production
Merge pull request #337 from BU-CS673/Brandon

Brandon
tests

fixing unit tests
merge conflicts with brandon

fixed some merge conflicts due to damageable changes
randomizing respawn

set the respawn location to a random spawn entity
fixed miner review issues
Merge branch 'production' into pmd-261

Conflicts:
	bubolo/test/bubolo/world/entity/concrete/TankTest.java
Merge branch 'production' into pmd-261

Conflicts:
	bubolo/src/bubolo/util/Parser.java
	bubolo/src/bubolo/world/entity/concrete/Tank.java
	bubolo/test/bubolo/world/entity/concrete/TankTest.java
fixed java docs
Merge pull request #338 from BU-CS673/pmd-261

spawn entity and tanks die