Adds a rake task to send reminders. An email is sent to each user with a list of the issues due in the next days, if any.

See @rake -D redmine:send_reminders@ for options.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1459 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/mailer/reminder.text.plain.rhtml

@@ -0,0 +1,7 @@
+<%= l(:mail_body_reminder, @issues.size, @days) %>:
+
+<% @issues.each do |issue| -%>
+* <%= "#{issue.project} - #{issue.tracker} ##{issue.id}: #{issue.subject}" %>
+<% end -%>
+
+<%= @issues_url %>