Add "Fix encoding" section

This bug was found for simple app "Companies:All data"

app.R

@@ -185,6 +185,14 @@ if (exist_cash()){
   detach("package:RMySQL", unload=TRUE)
   library(sqldf)
   
+  # Fix encoding
+  df_entity <- df_entity %>%
+    mutate(
+      name = iconv(name, to="ASCII//TRANSLIT"),
+      city = iconv(city, to="ASCII//TRANSLIT"),
+      description = iconv(description, to="ASCII//TRANSLIT"))
+  # TODO: for other tables
+  
 }
 
 # UI ----------------------------------------------------------------------