[ticket/10533] Added search for user's topics to view profile.

Adds the ability to quickly search for all topics someone has created
without having to go to forumname/search.php. This adds the appropriate
english language variable, adds the search query to phpBB/memberlist.php
along with keeping the spacing correct. Adds the text to both prosilver
and subsilver2.

PHPBB3-10533
[ticket/10533] Add user topics, percent, and per day to view profile.

This change adds the same information about topics to the user profile
that already exists about posts. This also modifies the display of the
search user's topics feature on the view profile page to look more in-line
with the same options that exist for posts.

PHPBB3-10533
[ticket/10533] Fixed issues raised by review on IRC.

Undid formatting changes. Removed a stary if statement. Fixed an SQL
statement to use TOPICS_TABLE instead of the name of the table. Formatted
the SQL statement according to the coding guidelines. Removed a stray
newline.

PHPBB3-10533
[ticket/10533] Only count approved topics.

This removes a bug where unapproved topics would be included in a user's
topic count.

PHPBB3-10533
[ticket/10533] add topic stats in the template file

PHPBB3-10533
[ticket/10533] remove duplicate language entries

PHPBB3-10533
[ticket/10533] add total topics in members list

PHPBB3-10533
[ticket/10533] add user_topics column to users table

PHPBB3-10533
[ticket/10533] remove extra line for topic queue

PHPBB3-10533
[ticket/10533] Remove sql query and instead use $member['user_topics']

PHPBB3-10533
[ticket/10533] Add user_topics column to schemas

PHPBB3-10533