removed unused helper
picture geometry now has it's own file and a flexible constructor
moving storage related stuff into it's own class
minor fixes
adding unit test for gm scaling param
renaming to_size function to gm_size_param_from

This matches the current situation better - we hand it the original size of
the image.
refactored scaling logic
minor: changing vars for no scale needed to simplify conditions
removing scales as they are only used in one place
removed before_render plugin (in favor of rails3_before_render gem)
generated Rails 3 app, fixed around deprecations etc until the server would start
temporarily symlink some crabgrass plugins to vendor/plugins/ (until tweaked plugin load paths work again)
reinvented link_to_remote
modalbox helper seems deprecated
symlinked crabgrass_theme plugin as well, added FIXME comment where I was last digging
downgraded 'rake' to 0.9.2 (for compatibility with rails 3.0.0)
config.frameworks is deprecated, commented in
config.action_controller.session_store= -> config.session_store
enabled custom plugin paths again, removed temporary symlinks
commented in deprecated config options