##TODO
* Features
+ * Show item count in model listing
* INSERT/UPDATE to multiple tables (so brand new item can be inserted with model at once)
* Need to know autoincremented ID of last inserted row
* DB
* Use GetText
* English and Czech locales
* Release engineering
+ * LMS
+ * Prodej
+ * Dodacak
+ * Castka bez DPH k vyfakturovani do LMS