Use Bundler to manage RedCloth
gem. 4.x should be much faster
and less buggy. Unfortunately,
it doesn't support mixed
Textile/Markdown syntax. So
we keep an (appropriately
renamed) copy of 3.x around,
for the users of the "Mixed"
text filter.
Remove the vendored sqlite3-ruby.
Instead, add support for Bundler
(which is vendored).
Before running the new Instiki,
do a
ruby bundle
which will install all of the needed gems
locally. (If you need to, tweak the contents
of Gemfile.)
