add note about compatibility with ruby 2.0.0 and 2.1.0 in README
allow users to delete their own accounts

not much can actually be deleted, but it can be put into a deleted
state
Merge pull request #99 from srgpqt/ruby2

README: add note about compatibility with ruby 2.0.0 and 2.1.0
don't interact with inactive users
apply comment_text class to private messages to get nicer formatting
fix Tag.accessible_to to allow moderators to use privileged tags
rename .rbenv-version file
Merge pull request #103 from ZubKonst/rename_rbenv-version

rename .rbenv-version to .ruby-version
Merge pull request #98 from srgpqt/master

remove redundant "story" variable in comment templates
add postgresql support
optimize traffic counter queries
possible fix for postgresql+sphinx indexing issue?
Merge pull request #87 from srgpqt/postgresql

add postgresql support for sphinx and Keystore