Remove empty lines from test/unit/mailer_test.rb.
Shorten query[column_names] param name.
Keep issue filter params on sort headers.
Changes pagination links to non-AJAX requests (#5138).
Makes all pagination-like links use #link_to_content_update (#5138).
Removed the changeset-changes class to the commit logs on the issue view (#8038).
Disable unused fields when switching the period type.
Removed hidden project_id and issue_id parameters.
Changed timelogs filters to use non-AJAX requests (#1965).
PDF: code clean up lib/redmine/export/pdf.rb.
