Changed the subject line for emails sent regarding mentions and other team notifications. This is meant to prevent notification emails from different teams from combining into a single email thread

api/templates/post_subject.html

@@ -1 +1 @@
-{{define "post_subject"}}[{{.Props.TeamDisplayName}} {{.SiteName}}] {{.Props.SubjectText}} for {{.Props.Month}} {{.Props.Day}}, {{.Props.Year}}{{end}}
+{{define "post_subject"}}[{{.SiteName}}] {{.Props.TeamDisplayName}} Team Notifications for {{.Props.Month}} {{.Props.Day}}, {{.Props.Year}}{{end}}