Avoid parsing content of [user] and [project] tags
Initial spoiler and nerdz grammar implementation (not working yet)
Spoiler was working, I simply forgot to include the grammar :c
Nerdz blockquote grammar changed (includes only lines beginning with ), began development for avoiding parsing of some block tags (math, code), began development for proper whitespaces and new lines management
Merge pull request #4 from cenci0/master

Spoilers and grammar update