Reuse $wgTitle

When the Wiki uses short URLs, $wgRequest[ 'title' ] is unset...

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Need to include MonoBook

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Show the site name in the upper left

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>