#1080: Remove footer ads/branding from default template

templates/base/footer.tmpl

@@ -5,10 +5,12 @@
 				© 2015 Gogs · {{.i18n.Tr "version"}}: {{AppVer}} · {{.i18n.Tr "page"}}: <strong>{{LoadTimes .PageStartTime}}</strong> · {{.i18n.Tr "template"}}: <strong>{{call .TmplLoadTimes}}</strong>
 			</div>
 			<div class="ui right links">
+				{{if .ShowFooterBranding}}
 				<a target="_blank" href="https://github.com/gogits/gogs"><i class="fa fa-github-square"></i><span class="sr-only">GitHub</span></a>
 				<a target="_blank" href="https://twitter.com/gogitservice"><i class="fa fa-twitter"></i><span class="sr-only">Twitter</span></a>
 				<a target="_blank" href="https://plus.google.com/communities/115599856376145964459"><i class="fa fa-google-plus"></i><span class="sr-only">Google Plus</span></a>
 				<a target="_blank" href="http://weibo.com/gogschina"><i class="fa fa-weibo"></i><span class="sr-only">Sina Weibo</span></a>
+				{{end}}
 				<div class="ui language bottom pointing dropdown link item">
           <i class="world icon"></i>
           <div class="text">{{.LangName}}</div>

templates/base/footer_old.tmpl

@@ -10,9 +10,11 @@
 		        </p>
 	        </div>
 
+				{{if .ShowFooterBranding}}
 	    	<div class="col-md-2" style="margin: -5px;">
 		        <a target="_blank" href="https://github.com/gogits/gogs"><i class="fa fa-github fa-2x"></i></a>
 	        </div>
+	        {{end}}
 
 	    	<div class="col-md-4">
 	        	<p class="desc">