Improve notification for a new version, show release notes

web/templates/_layout.html

@@ -34,13 +34,12 @@
     </div>
     <div class="top-bar-right">
       <ul class="menu">
-        {{ if newVersion }}
         <li>
-          <div><a href="https://github.com/tardisx/linkwallet/releases/tag/{{ newVersion }}">{{ newVersion }} available</a></div>
-        </li>
-        {{ end }}
-        <li class="menu-text">
-          {{ version }}
+          <a href="/releaseinfo">{{ version.Local.Tag }}
+            {{ if version.UpgradeAvailable }}
+            ❗
+            {{ end }}
+          </a>
         </li>
         <li>
           <a href="https://github.com/tardisx/linkwallet">
@@ -64,6 +63,8 @@
       {{ template "config.html" . }}
       {{ else if eq .page "edit" }}
       {{ template "edit.html" . }}
+      {{ else if eq .page "releaseinfo" }}
+      {{ template "release_info.html" . }}
       {{ end }}
       {{/* template "foundation_sample.html" . */}}
     </div>

web/templates/release_info.html

@@ -0,0 +1,23 @@
+<div class="grid-x grid-padding-x">
+    <div class="large-12 cell">
+
+        <h5>Release info</h5>
+        {{ if not version.Remote.Valid }}
+        <p>GitHub version information not yet fetched.</p>
+        {{ else }}
+        {{ if version.UpgradeAvailable }}
+        <p>
+            A new version is available: 
+            <a href="https://github.com/tardisx/linkwallet/releases/tag/{{ version.Remote.Tag }}">
+                {{ version.Remote.Tag }}
+            </a>
+            (you have {{ version.Local.Tag }}).
+        </p>
+
+        {{ markdown version.UpgradeReleaseNotes }}
+
+        {{ else }}
+        <p>You are currently running the most recent version.</p>
+        {{ end }}
+        {{ end }}
+</div>