Initial support for default/template strings

(re: #30)

defaults.json

@@ -0,0 +1,60 @@
+{
+  "aparat": {
+    "name": "{community} Aparat",
+    "description": "Subscribe to our Aparat channel"
+  },
+  "discord": {
+    "name": "{community} Discord",
+    "description": "Get in touch with other mappers on Discord"
+  },
+  "discourse": {
+    "name": "{community} Discourse"
+  },
+  "facebook": {
+    "name": "{community} on Facebook",
+    "description": "Join our community on Facebook"
+  },
+  "forum": {
+    "name": "{community} Forum"
+  },
+  "github": {
+    "name": "{community} GitHub"
+  },
+  "gitlab": {
+    "name": "{community} GitLab"
+  },
+  "irc": {
+    "name": "{community} on IRC"
+  },
+  "mailinglist": {
+    "name": "{resource} Mailing List",
+    "description": "The official mailing list for the {community} community"
+  },
+  "matrix": {
+    "name": "{community} Matrix"
+  },
+  "meetup": {
+    "name": "{community} Meetup"
+  },
+  "slack": {
+    "name": "{community} Slack"
+  },
+  "telegram": {
+    "name": "{community} Telegram",
+    "description": "Join our community Telegram chat"
+  },
+  "twitter": {
+    "name": "{community} on Twitter",
+    "description": "Follow us on Twitter"
+  },
+  "wiki": {
+    "name": "{community} Wiki"
+  },
+  "xmpp": {
+    "name": "{community} XMPP"
+  },
+  "youtube": {
+    "name": "{community} on YouTube",
+    "description": "Subscribe to our YouTube channel"
+  }
+}