[ticket/11489] CSS changes for topiclist lists

PHPBB3-11489
[ticket/11489] Template changes for new topiclist layout

PHPBB3-11489
[ticket/11489] IE7 adjustments

PHPBB3-11489
Merge remote-tracking branch 'remotes/cyberalien/ticket/11489' into develop

# By Vjacheslav Trushkin
# Via Vjacheslav Trushkin
* remotes/cyberalien/ticket/11489:
  [ticket/11489] IE7 adjustments
  [ticket/11489] Template changes for new topiclist layout
  [ticket/11489] CSS changes for topiclist lists