fix hompage links

juick/manifest.ini

@@ -6,4 +6,4 @@ description: Clickable Juick links , Juick nicks, preview Juick picturs.
  The key combination alt + up in the textbox allow insert the number of last message (comment or topic).
 authors: Denis Fomin <fominde@gmail.com>
  evgen <drujebober@gmail.com>
-homepage: http://trac-plugins.gajim.org/wiki/
+homepage: http://trac-plugins.gajim.org/wiki/JuickPlugin

message_box_size/manifest.ini

@@ -4,4 +4,4 @@ short_name: message_box_size
 version: 0.2.1
 description: Allows you to adjust the height of the new message input field.
 authors: Denis Fomin <fominde@gmail.com>
-homepage: http://trac-plugins.gajim.org/wiki/JuickPlugin
+homepage: http://trac-plugins.gajim.org/wiki/MessageBoxSizePlugin

now_listen/manifest.ini

@@ -4,4 +4,4 @@ short_name: now-listen
 version: 0.1.1
 description: Copy tune info to conversation input box (alt + n) at cursor position
 authors = Denis Fomin <fominde@gmail.com>
-homepage = http://trac-plugins.gajim.org/wiki
+homepage = http://trac-plugins.gajim.org/wiki/NowListenPlugin

plugins_translations/manifest.ini

@@ -4,4 +4,4 @@ short_name: plugins_translations
 version: 0.6.1
 description: This plugin contains translation files for Gajim plugins
 authors = Denis Fomin <fominde@gmail.com>
-homepage = http://trac-plugins.gajim.org/wiki/
+homepage = http://trac-plugins.gajim.org/wiki/PluginsTranslationsPlugin