0.7.0 final (hopefully) tweaks, fixes and additions

[CasualNoLifer]

• Various model fixes and tweaks
• Various texture tweaks
• Updated weapon data
• Added M1911 by Joel McCassidy
• Added Magnum by CasualNoLifer and WitherFlint343
• Removed unused ammo files

Note to auto: Please remove the registry for the outdated ammo types and remember to change the icons to a gun or another ammo type.

Additionally, the M1911 and Magnum need to be registered. :)