[Client] Implement word mute

Closes #1739

src/client/app/common/scripts/should-mute-note.ts

@@ -0,0 +1,28 @@
+export default function(me, settings, note) {
+	const isMyNote = note.userId == me.id;
+	const isPureRenote = note.renoteId != null && note.text == null && note.fileIds.length == 0 && note.poll == null;
+
+	if (settings.showMyRenotes === false) {
+		if (isMyNote && isPureRenote) {
+			return true;
+		}
+	}
+
+	if (settings.showRenotedMyNotes === false) {
+		if (isPureRenote && (note.renote.userId == me.id)) {
+			return true;
+		}
+	}
+
+	if (settings.showLocalRenotes === false) {
+		if (isPureRenote && (note.renote.user.host == null)) {
+			return true;
+		}
+	}
+
+	if (!isMyNote && note.text && settings.mutedWords.some(q => !q.some(word => !note.text.includes(word)))) {
+		return true;
+	}
+
+	return false;
+}