Added Hide/Unhide mechanism
Removed (empty) labels on default, as they clutter the inspect mode. Labels are added only when requested now
ShowPoint, ShowVector, ShowCoords all return the EntityId now

Better positioning for labels
Fixed a bug for displaying small vectors that point exactly upwards or downwards

Added documentation to indicator_lua.lib

Now you only need a name when you want more than one of a kind (Point, Vector, Coord)
Added labels and basic support to show names. Disabled by default until there is a better way to place labels
Changed Point color, so it is not confused with coords origin

Added models for vectors and points
Added library indicator_lib.lua
Separated the label stuff into show_orientation.lua

Removed inside geometry for better visibility raycasting