CLI flags, start setting up goreleaser, add build scripts

Copied and fixed the build scripts from jf-accounts, added them to the
.goreleaser.yml. Also:
data directory now stored in user's config folder
Handle timeouts in jfapi
Maybe more i forgot about.

mail/created.txt

@@ -0,0 +1,7 @@
+A user was created using code {{ .code }}.
+
+Name: {{ .username }}
+Address: {{ .address }}
+Time: {{ .time }}
+
+Note: Notification emails can be toggled on the admin dashboard.