refs #720, improved distributor and airline/livery detection

* mark data read from DB (req. for string key where existing key value is not reliable indicator for DB data)
* detect distributors by part of model string
* use a simplified name (no spaces, no special characters) to find a match
* allow to obtain model strings (=keys) as set and list

src/blackmisc/aviation/airlineicaocodelist.h

@@ -66,6 +66,9 @@ namespace BlackMisc
             //! Find by country code
             CAirlineIcaoCodeList findByCountryIsoCode(const QString &isoCode) const;
 
+            //! Find if simplified name contains search string
+            CAirlineIcaoCodeList findBySimplifiedNameContaining(const QString &containedString) const;
+
             //! Find by military flag
             CAirlineIcaoCodeList findByMilitary(bool military) const;
 
@@ -87,7 +90,6 @@ namespace BlackMisc
             //! From our DB JSON
             static CAirlineIcaoCodeList fromDatabaseJson(const QJsonArray &array, bool ignoreIncomplete = true);
         };
-
     } //namespace
 } // namespace