New option for the moderation bot:

* forbid messages with too many special characters (#517).
* update moderation bot to v0.4.0.
* refactoring localization segments to reuse existing one in multiple
  context.
* npm run doc:translate

shared/lib/types.ts

@@ -96,6 +96,7 @@ interface ChannelConfigurationOptions {
     forbiddenWords: ChannelForbiddenWords[]
     quotes: ChannelQuotes[]
     commands: ChannelCommands[]
+    forbidSpecialChars: ChannelForbidSpecialChars
     // TODO: bannedJIDs: string[]
   }
   slowMode: {
@@ -132,6 +133,13 @@ interface ChannelCommands {
   message: string
 }
 
+interface ChannelForbidSpecialChars {
+  enabled: boolean
+  tolerance: number
+  reason: string
+  applyToModerators: boolean
+}
+
 interface ChannelConfiguration {
   channel: ChannelInfos
   configuration: ChannelConfigurationOptions