latexbuilder.rb: add headline level (paragraph and subparagraph)
latexbuilder.rb: add headline level (paragraph and subparagraph)

murashitas/review,krororo/review,kmuto/review,kuad9/review_study,takahashim/review,suzuki/review,krororo/review,kmuto/review,masawada/review,orangain/review,masawada/review,takahashim/review,krororo/review,suzuki/review,orangain/review,murashitas/review,kuad9/review_study,kmuto/review