Fixed small documentation typo.
Added special slabs.
Padding minutes/seconds < 10 with a zero.
Fixed findExecutablePath() on osx 10.9
Fixed recently added special double slabs.
Improved appearance of snow by making the flat snow a few pixels high.
Changed lighting intensity a bit, applying it to all blocks.
Fixed lava blocks spreading downwards.
Some progress bar refactoring.
Added .DS_Store (folder metadata file on OSX) to .gitignore
Merge branch 'master' into jernej
Merge pull request #54 from jernejstrasner/master

Small OSX fixes
Merge branch 'master' into extended_config_markergen