addFacade with an ItemStack of 0 would create a facade recipe without a block
fixed some spelling mistakes in build.grade
added IDEA project files to .gitignore
Oh look! debug log text! <squish>
Found some more valid facades!
minor enhancements to pipe support in blueprints
fixed name and added protection against NPE, part of #1465
Merge branch 'BuildCraft-5.0.x' into NextGen