Reduce max height of issue description textarea from 100 to 20 (#23840).

git-svn-id: http://svn.redmine.org/redmine/trunk@15884 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/issues/_form.html.erb

@@ -29,7 +29,7 @@
   <%= content_tag 'span', :id => "issue_description_and_toolbar", :style => (@issue.new_record? ? nil : 'display:none') do %>
     <%= f.text_area :description,
                    :cols => 60,
-                   :rows => (@issue.description.blank? ? 10 : [[10, @issue.description.length / 50].max, 100].min),
+                   :rows => [[10, @issue.description.to_s.length / 50].max, 20].min,
                    :accesskey => accesskey(:edit),
                    :class => 'wiki-edit',
                    :no_label => true %>