Fixed #515: Added 8m band without bandplan

Based on the available information, only selected countries permit
this band. Therefore, the exact band plan is unknown now. For this reason,
the band has been added without a band plan, and the frequency is based on the Irish plan (40-45 MHz)

core/Migration.h

@@ -42,7 +42,7 @@ class Migration : public QObject
     QString fixIntlField(QSqlQuery &query, const QString &columName, const QString &columnNameIntl);
     bool refreshUploadStatusTrigger();
 
-    static const int latestVersion = 30;
+    static const int latestVersion = 31;
 };
 
 #endif // QLOG_CORE_MIGRATION_H

res/res.qrc

@@ -43,5 +43,6 @@
         <file>sql/migration_028.sql</file>
         <file>sql/migration_029.sql</file>
         <file>sql/migration_030.sql</file>
+        <file>sql/migration_031.sql</file>
     </qresource>
 </RCC>

res/sql/migration_031.sql

@@ -0,0 +1,2 @@
+INSERT INTO bands (name, start_freq, end_freq, enabled) VALUES
+('8m',40.0, 45.0, 0);