update version to 2.0.0.pre8
update the misc controller manual
update the lifecycle manual for 2.0 and fill in TODO section
fix newlines in our Gemfile generation
add a couple of explicit requires so that hobo_rapid and hobo_jquery don't have to be in Gemfile but can be implicitly included.
change default theme to bootstrap for --setup option
remove legacy info from viewhints manual
update subsite tutorial for Hobo 2.0.
update tutorials index.
use recipes for main tutorials TOC.
update download & i18n pages for 2.0