fix environment variable for preproc_topics and wg

bin/preproc_topics.sh

@@ -28,7 +28,7 @@ do
     cp $f $RESEARCH_BUILD/$filename
 
     #extract title of topic
-    title=`$RESEARCH_BUILD/extract_title.sh $RESEARCH_BUILD/$filename`
+    title=`$RESEARCH_ROOT/bin/extract_title.sh $RESEARCH_BUILD/$filename`
     echo "Preprocessing topic $title"
 
     # append research topic to index

bin/preproc_wg.sh

@@ -29,7 +29,7 @@ fi
 
 #extract title of topic
 echo "Extracting title of $1..."
-title=`./extract_title.sh $RESEARCH_BUILD/$filename`
+title=`$RESEARCH_ROOT/bin/extract_title.sh $RESEARCH_BUILD/$filename`
 echo "Title of Topic: $title"
 
 # start preprocessing