added missing convert handler

services/web/app/views/project/list/side-bar.jade

@@ -107,7 +107,7 @@
 				hr
 				p.small #{translate("on_free_sl")}
 				p
-					a(href="/user/subscription/plans").btn.btn-primary #{translate("upgrade")}
+					a(href="/user/subscription/plans", sixpack-convert="left-menu-upgrade-reason").btn.btn-primary #{translate("upgrade")}
 				p.small.text-centered
 					| #{translate("or_unlock_features_bonus")} 
 					a(href="/user/bonus") #{translate("sharing_sl")} .