Change installation directory check and add dependency

Update directory check from /var to /opt/convertx and ensure dependencies.

ct/convertx.sh

@@ -24,7 +24,7 @@ function update_script() {
   header_info
   check_container_storage
   check_container_resources
-  if [[ ! -d /var ]]; then
+  if [[ ! -d /opt/convertx ]]; then
     msg_error "No ${APP} Installation Found!"
     exit
   fi
@@ -33,6 +33,8 @@ function update_script() {
     systemctl stop convertx
     msg_info "Stopped Service"
 
+    ensure_dependencies libreoffice-writer
+
     msg_info "Move data-Folder"
     if [[ -d /opt/convertx/data ]]; then
       mv /opt/convertx/data /opt/data