This patch adds in a new skill system, changes how command works, and fixes a few other more minor issues.

0.813 change list:

* now get 2 skill points per ship level
* added command skill
* now send skill data across network again
* removed under construction
* show skill points
* now skills are locked until you have enough command
* skills now dim when you don't meet the requirements
* added command requirement to all skills
* now slot skills update hull properly
* moved starting crew bonus from race to basic skill from race trait
* increased starting crew bonus for normal races (now same as subraces) (Tekrom0)
* temporarily turned off Attribute Penalty stuff (the status effect still shows up, but the negative effects are off)
* a skill can now specify multiple StatChangePerAttribute things
* moved per crew bonuses from race to basic skill from race trait
* old command attribute stuff is automatically transition to skill command/slot stuff
* moved command attribute bonuses from hull to basic skill from race trait
* added descriptions to skill types
* added crew points to level up message
* now make sure only take 2 skill trees from race traits
* added textures to command bar
* added NOT IMPLEMENTED YET! description to skills not implemented yet
* added descriptions to slot skills
* added a bunch of skill descriptions
* now if ctrl buy on an consumable in essential components section, only buy 1 instead of buying until you're out of credits (derpenstein)
* npc projectiles now home correctly if they are supposed to
* changed PROTOCOL_VERSION to 92
* implemented Exploit Weakness skill
* implemented Explosives Expert skill
* implemented Extortion skill
* implemented Flash Bang skill
* implemented Rupture skill
* implemented Scanning Expert skill
* implemented Weapons Proficiency skill
* implemented Mercy skill (Bluddy)
* implemented Xenosociology skill (Eris Shrugged)
* implemented Adrenaline skill
* implemented Feedback skill
* implemented Phasing skill
* implemented Tactician skill
* implemented Intimidate skill
* implemented Unforgetable skill (Sharp)
* implemented Nanomite Cloud skill
* implemented Penetration skill
* implemented Blur skill
* implemented Frequency Modulation skill
* implemented Chained Beams skill (Bluddy)
* implemented Beam Mastery skill
* implemented Ignite skill
* implemented Assassin skill
* implemented Hack skill
* implemented Ruthless skill
* implemented Scramble skill
* implemented Electronic Warfare skill
* implemented Surgical Strikes skill
* implemented Power Amplification skill
* implemented Power Overload skill
* implemented Feedback Pulse skill
* implemented Plasma Cannon Mastery skill
* implemented Unstable Projectiles skill
* implemented Homing Chaos skill
* implemented Full Spread skill
* implemented Ballistics Mastery skill
* implemented Barrage skill
* implemented Kinetic Shockwave skill
* implemented Energy Net skill
* implemented Concussive Blast skill
* implemented Brute Force skill
* implemented Marine Tactics skill
* implemented Overwhelm skill
* implemented Retribution skill (Bluddy)
* implemented Swarm skill
* implemented Marine Phasing skill
* implemented Coordinated Maneuvers skill
* implemented Melt skill
* implemented Absorption skill
* implemented Reactive Armor skill
* implemented Explosive Impact skill
* implemented Technology Find skill (Bluddy)
* implemented Weapon Focus skill
* implemented Mind Control skill
* implemented Rumormonger skill
* implemented Spying skill
* implemented Shockwave skill
* implemented Personal Cloaking skill
* implemented Mine Cloak skill
* implemented Chain Reaction skill
* implemented Saboteur skill
* implemented Missile Mastery skill
* implemented Missile Afterburn skill
* implemented Shatter skill
* implemented Weaken skill
* implemented Harvest skill
* implemented Crumble skill
* implemented Amplify Damage skill
* implemented Destabilize Core skill
* implemented Maintenance Expert skill
* implemented Reverse engineering skill
* implemented Gunner skill
* implemented Incinerate skill
* implemented Diplomatic Relations skill
* implemented Plasma Overload skill
* implemented Launcher skill
* implemented Hacker skill
* implemented Weapons Mastery skill
* implemented Vampire skill
* implemented Vanguard skill
* implemented Point Blank skill
* implemented Longshot skill
* implemented Mine Tracking skill
* implemented Missile Retargeting skill
* implemented Penetrate skill
* implemented Planetology skill