added TourBeginningDescription site setting (dehardcoding Codidactyl)

Author: Oaphi

app/views/tour/index.html.erb

@@ -1,17 +1,16 @@
 <div class="grid">
-    <div class="grid--cell codidactyl">
-        <img src="/assets/codidactyl.png" alt="Codidactyl">
+  <div class="grid--cell codidactyl">
+    <img src="/assets/codidactyl.png" alt="Codidactyl">
+  </div>
+  <div class="grid--cell is-flexible">
+    <div class="widget">
+      <div class="widget--body">
+        <%= raw(sanitize(render_markdown(SiteSetting['TourBeginningDescription']), scrubber: scrubber)) %>
+      </div>
+      <div class="widget--footer">
+        <a href="/tour/q" class="button is-filled">Let's go</a>
+        <a href="/" class="button">No, thanks</a>
+      </div>
     </div>
-    <div class="grid--cell is-flexible">
-        <div class="widget">
-            <div class="widget--body">
-                <p>Hi!</p>
-                <p>I'm your friendly neighbourhood <a href="https://en.wikipedia.org/wiki/Pterodactylus">Codidactyl</a> and I'd like to introduce you to this website. Don't worry: It doesn't take long and you can abort at any time.</p>
-            </div>
-            <div class="widget--footer">
-                <a href="/tour/q" class="button is-filled">Let's go</a>
-                <a href="/" class="button">No, thanks</a>
-            </div>
-        </div>
-    </div>
-</div>
+  </div>
+</div>

db/seeds/site_settings.yml

@@ -582,6 +582,17 @@
   description: >
     Automatically expand vote summary entries for the last X days, X being the value of this setting. Set to 0 to expand all entries.
 
+- name: TourBeginningDescription
+  value: >
+    <p>Hi!</p>
+    <p>I'm your friendly neighbourhood <a href="https://en.wikipedia.org/wiki/Pterodactylus">Codidactyl</a> and I'd like to introduce you to this website.
+    Don't worry: It doesn't take long and you can abort at any time.</p>
+  value_type: text
+  community_id: ~
+  category: Tour
+  description: >
+    Displayed as the first element on the tour page. Markdown allowed.
+
 - name: TourMoreBeginningDescription
   value: >
     <p>Yay!</p>