[AB-xxx] adding avatar to message embed

adding avatar to starboard post
adding possibility to define a color for the starboard container
fixing attachment logic for starboard post
fixing streamer went offline message not using components v2

translations/starboard/src/main/resources/default/listener/starboard_post_embed_additional_message.ftl

@@ -1 +1,2 @@
-${emote} ${count} by ${userText} in ${channelMention} ID: ${messageId}
+-# ${emote} ${count} by ${userText} in ${channelMention}
+-# ID: ${messageId}

translations/twitch/src/main/resources/default/general/twitch_streamer_went_offline_notification_past_sections.ftl

@@ -1,4 +1,4 @@
 They played:
 <#list pastSections as section>
-    <@format_instant_date_time instant=section.startedAt/> `${section.gameName}` - `${section.title}`
+<@format_instant_date_time instant=section.startedAt/> `${section.gameName}` - `${section.title}`
 </#list>