Translation preparation and some webgui code

INSTALL

@@ -7,6 +7,7 @@ YMS Installation
 - Python 3
   - python3-bcrypt
 - optional 
+  - gettext
   - mupdf-tools for extended pdf file management
 
 1.2 Native GUI
@@ -20,7 +21,6 @@ YMS Installation
   - php-mysql
   - php-xml
 
-
 2. Create database
 
 Create a database for YMS on your server, as well as a MariaDB user who has
@@ -39,6 +39,15 @@ Import the mariadb.sql file into your database, which will create the tables
 
   mariadb yms < mariadb.sql
 
+According to your desired language import minimal required dataset into your
+new database. For german use
+
+   mariadb yms < minimal.sql
+
+or alternatively for english language
+
+   mariadb yms < minimal_en.sql
+
 Optional import some sample data
 
   mariadb yms < mariadb_sample.sql