Clarify what introduced means when creating a machine. Fixes #25

Marechai/Pages/Admin/Details/Machine.razor

@@ -112,7 +112,7 @@
     @if (_editing || _model.Introduced.HasValue)
     {
         <Field>
-            <FieldLabel>@L["Introduced"]</FieldLabel>
+            <FieldLabel>@L["Introduced (public release)"]</FieldLabel>
             @if (_editing)
             {
                 <Check TValue="bool" Disabled="_prototype" @bind-Checked="@_unknownIntroduced">@L["Unknown (introduction date)"]</Check>

Marechai/Resources/Services/MachinesService.es.resx

@@ -734,4 +734,7 @@
     <value>¿Estás seguro de eliminar la pantalla seleccionada de esta máquina?</value>
     <comment>Are you sure you want to delete the selected screen from this machine?</comment>
   </data>
+  <data name="Introduced (public release)" xml:space="preserve">
+    <value>Introducida públicamente en</value>
+  </data>
 </root>

Marechai/appsettings.json

@@ -1,4 +1,7 @@
 {
+  "ConnectionStrings": {
+    "DefaultConnection": "server=zeus.claunia.com;port=3306;user=marechai;password=marechaipass;database=marechai;TreatTinyAsBoolean=false"
+  },
   "Logging": {
     "LogLevel": {
       "Default": "Information",