[ticket/11111] Prosilver posting textarea may only be resized vertically

The resize element displays a mechanism for allowing the
user to resize the element. Setting this to vertical means it
may only be resized vertically.

PHPBB3-11111
[ticket/11787] Changes <samp> to <strong> in en/acp/permissions.php

PHPBB3-11787
[ticket/12073] Increase size of samp and code tags in ACP

PHPBB3-12073
[ticket/12029] Remove ellipsis and wrap long sidebar items in ACP

PHPBB3-12029
Merge remote-tracking branch 'vsephpbb/ticket/12073' into develop

* vsephpbb/ticket/12073:
  [ticket/12073] Increase size of samp and code tags in ACP
Merge remote-tracking branch 'vsephpbb/ticket/11111' into develop

* vsephpbb/ticket/11111:
  [ticket/11111] Prosilver posting textarea may only be resized vertically
Merge remote-tracking branch 'vsephpbb/ticket/12029' into develop

* vsephpbb/ticket/12029:
  [ticket/12029] Remove ellipsis and wrap long sidebar items in ACP
Merge remote-tracking branch 'crizz0/ticket/11787' into develop

* crizz0/ticket/11787:
  [ticket/11787] Changes <samp> to <strong> in en/acp/permissions.php