Update git URL and the re-write rule to point to 15.10

With Mahara 15.10 being released later this week, the
user manual also needs to be changed to 15.10.

maharadocs-1.7/debian/maharadocs.postinst

@@ -57,7 +57,7 @@ fi
 # Make our lovely new install from the git address.
 # Despite all our checking, this can fail horribly after a long wait;
 # there's not really much we can do about that now.
-echo "Downloading the manual into $DIRNAME from gitorious.org:"
+echo "Downloading the manual into $DIRNAME from git.mahara.org:"
 echo "$GITURL"
 echo "This may take a while..."
 git clone $GITURL $DIRNAME
@@ -115,7 +115,7 @@ cat > /etc/apache2/sites-available/mahara-manual-sphinx.conf << EOF
         RewriteEngine on
         RewriteRule ^(.*)/1.4_STABLE/(.*)$ $1/1.4/$2
         RewriteRule ^(.*)/1.5_STABLE/(.*)$ $1/1.5/$2
-        RewriteRule   ^/$  /en/15.04/  [R]
+        RewriteRule   ^/$  /en/15.10/  [R]
     </IfModule>
 
 </VirtualHost>