prosilver: Show unread PMs count on the navbar when available
CSS PM notifications: apply patch for prosilver and subsilver2 templates

This gets rid of the javascript popup notification that's blocked by
pretty much every modern browser that cares about its users, and
replaces it with a position:fixed CSS-styled box.

The original proof-of-concept patch for prosilver was provided by
Gambit and went through many modifications ever since. The final
version for prosilver spent at least one year and a half baking.

Only modifications for prosilver and subsilver2 are provided here.
No style or imageset changes are needed since all new CSS is inline.
AcidTech already has a big notification block in overall_header,
so it's excluded from this commit.
Wesnoth mod: Show registration IP in memberlist single profile view for users with a_user permission

Applied template changes for prosilver, Subsilver2 and AcidTech
subsilver2, prosilver: add forum feed icons to forum list
Prosilver: add an in-style Quick reply button

[Taken from Evil Quick Reply mod for phpBB < 3.0.6]
Prosilver Special Edition: add an in-style Quick reply button
Subsilver2: allow Quick Reply form visibility to be toggled like prosilver and AcidTech

[Unpublished custom hack]
BBcode Buttons on Quick Reply: apply mod version 1.1.0

[http://www.phpbb.com/customise/db/mod/bbcode_buttons_and_smilies_for_quick_reply]

 - Applies template modifications for prosilver, subsilver2/wesnoth
   and AcidTech (custom)
Subsilver2: Fix smilies' box alignment in the Quick Reply editor (rep. by Gambit)
Preview button for Quick Reply: implement from Wesnoth forum topic

[http://forums.wesnoth.org/viewtopic.php?f=17&t=31726]
Search Users' Posts in Viewtopic: apply mod version 1.0.3, modified

[http://www.phpbb.com/customise/db/mod/search_users_posts_in_viewtopic]

 * This patch only enables the functionality included in this little mod
   when the user viewing the topic has MCP access.
 * Applied patch for subsilver2, prosilver and acidtech templates.
Make viewtopic output with prosilver valid XHTML 1.0 Transitional again

This reverts part of ba8e5844ce0136d717ea7a57a81b237790f689e4 so the
BBCode buttons are not available in the no-JScript version of the quick
reply editor. Most prosilver users would probably have JScript enabled
anyway. I need validator output to stay as clean as possible and nobody
will ever notice this little inconsistency.
Lock New Topic on Submit: apply mod version 1.0.4

[http://www.phpbb.com/customise/db/mod/lock_new_topic_on_submit/]