Minor bugfixes + slight submarine redesign

Added WIP CombineHuman character, not sure how to make it playable tho

Removed <holdable> for throwable items
Enabled combine submarine auto-changing batteries

Calibrated supercapacitor's power values
Removed water damage from power modules

Fixed combine outpost merchant items, added outpost medic

Moved obsolete Heavy Ordnance loader to decorations, updated outpost modules, updated mod structure for new format

Improved Plasma Emitter, now can work as a welding tool, and cutting tool with default combine batteries, removed stun from pulse weapons, changed rewiring button for doors, updated UI textures for coloring in the future, added more fire extinguishers into combine submarine

Finally fixed outpost NPC spawns, updated sonar blip texture on combine nav terminal, rebalanced weapon damage

Partially fixed combine outposts, now you can traverse them, the NPC spawn will be the next step to fix, Fixed combine commander role priority and also allowed to play as any combine role without them being overriden by captain, fixed combine items being sold everywhere

Fixed various item entries, another attempt on fixing combine outpost modules