Support for quoted command line arguments when invoking mcedit.sh on Linux.
Support for quoted command line arguments when invoking mcedit.sh on Linux.

The former behaviour made arguments eclosed in quotes split on spaces.
"my argument" was saw as "my" "argument" by MCEdit, and was not parsed correctly.
Worlds which have spaces in their name could not be loaded using the command line.

fhfuih/MCEdit-Unified,skinny121/MCEdit-TallWorlds,fhfuih/MCEdit-Unified,gpmidi/MCEdit-Unified,skinny121/MCEdit-TallWorlds,Khroki/MCEdit-Unified,Khroki/MCEdit-Unified,Khroki/MCEdit-Unified,skinny121/MCEdit-TallWorlds,gpmidi/MCEdit-Unified,gpmidi/MCEdit-Unified,fhfuih/MCEdit-Unified