Added two minimap-only tiles
Map-only tiles will not prevent powers that require_empty
Only use one trim() function in UtilsParsing

Closes #728

Also, use trim on the entire line in FileParser::next() so that sections
and comments can have whitespace around them.
Merge pull request #729 from dorkster/whitespace

Only use one trim() function in UtilsParsing
Use "||" instead of "or" for style reasons
Merge pull request #721 from makrohn/maponlytiles

Added two minimap-only tiles
Merge remote-tracking branch 'mainline/master' into floatingpointmovement

Conflicts:
	src/MapCollision.cpp