Include build version on site.

.gitlab-ci.yml

@@ -134,6 +134,7 @@ pages:
   script:
     - cp -r site .public
     - sed -i -e "s/%BUILDDATE%/$(date +'%Y-%m-%d %H:%M')/g" .public/index.html
+    - sed -i -e "s/VERSION%/$(cat version)/g" .public/index.html
     - cp safelinks-cleaner-*.xpi .public
     - mv .public public
     - ls -lr public

site/index.html

@@ -31,7 +31,7 @@
             Links. Download the stable extension using your browser or
             mail program, or join the beta crowd here.
 	    <br />
-	    <span class="small">Most recent build: %BUILDDATE% UTC</span>
+	    <span class="small">Most recent build: %VERSION% (%BUILDDATE% UTC)</span>
           </div><!--//tagline-->
         </div><!--//container-->
       </header><!--//header-->