Fix pleroma install

src/freedombone-utils-gnusocialtools

     git checkout $PLEROMA_COMMIT -b $PLEROMA_COMMIT
     set_completion_param "${app_name} pleroma commit" "$PLEROMA_COMMIT"
 
+    if [ -d $INSTALL_DIR/pleroma/node_modules ]; then
+        rm -rf $INSTALL_DIR/pleroma/node_modules
+    fi
+
     npm install -g yarn
     npm install -g eslint@3.19.0
     npm install -g eslint-plugin-promise@3.5.0
     npm install -g moment@2.18.1
+    npm install -g node-sass@4.5.2
     yarn
+    if [ -f $INSTALL_DIR/pleroma/dist/index.html ]; then
+        rm -rf $INSTALL_DIR/pleroma/dist/*
+    fi
     npm run build
     if [ ! -d $INSTALL_DIR/pleroma/dist ]; then
         echo 'Unable to build pleroma'