split up dispatch_index so we can do method lookup without calling anything
use the normal dispatcher to find interesting method/attr names for the console
use the new stuff for typeless table objects too. get rid of the old introspection code in LuaConsole, nothing uses it anymore
rewrite the name lookup. now properly skips hidden keys
LuaOB::GetNames: Add support for __index metafield in typeless tables
Correct assert
Un-cache textures before reloading model

Closes #1939
lanner: reduce size threshold for the lower detail level
lanner: add registration label positions
lanner: add decal patches; shift the regid label slightly
lanner: increase brightness of the emissive parts (weird green things)
Merge remote-tracking branch 'johnbartholomew/sgmodel-lanner'
Merge remote-tracking branch 'luomu/texreload-etc'
Merge branch 'lua-console-dispatch'