Remove releases-specific RST roles
Remove releases-specific RST roles

vim find/replace:

%s,:\(support\|release\|bug\|feature\)\:\`[-]*` ,,ge

%s,:\(support\|release\|bug\|feature\)\:\`\([0-9]*\)\`,:issue:`\2` ,ge

%s,- \:\(release\)\:\`\(.*\)\`,\2\r,ge

tony/vcspull,tony/vcspull