Second iteration of source generated localized strings

- Strs renamed to strs
- Generic params will now default to object instead of string for convenient argument passing
- Many strings changed to use generated properties

src/NadekoBot/Modules/Utility/UnitConversionCommands.cs

@@ -21,7 +21,7 @@ namespace NadekoBot.Modules.Utility
                 var units = _service.Units;
 
                 var embed = _eb.Create()
-                    .WithTitle(GetText("convertlist"))
+                    .WithTitle(GetText(strs.convertlist))
                     .WithOkColor();