General fixes (#54)

Depends on #55

These changes are really small and I don't know how to reasonably split
them into multiple PRs, but here's the changelog:
- The result of the `UtilityService#LogActionAsync` call in
`BanCommandGroup#BanUserAsync` is no longer ignored and it's errors will
now prevent feedback from being sent;
- Converted `if` statement to a `return` with ternary in
`LanguageOption`;
- Slightly decreased method complexity of
`MessageDeletedResponder#RespondAsync` by cleverly using Results;
- Changed the order of parameters for `UtilityService#LogActionAsync` to
flow better;
- Removed the exemption for `ConvertIfToReturnStatement` for
InspectCode.

---------

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

src/Data/Options/LanguageOption.cs

@@ -27,9 +27,8 @@ public class LanguageOption : Option<CultureInfo> {
 
     /// <inheritdoc />
     public override Result Set(JsonNode settings, string from) {
-        if (!CultureInfoCache.ContainsKey(from.ToLowerInvariant()))
-            return Result.FromError(new ArgumentInvalidError(nameof(from), Messages.LanguageNotSupported));
-
-        return base.Set(settings, from.ToLowerInvariant());
+        return CultureInfoCache.ContainsKey(from.ToLowerInvariant())
+            ? base.Set(settings, from.ToLowerInvariant())
+            : Result.FromError(new ArgumentInvalidError(nameof(from), Messages.LanguageNotSupported));
     }
 }