ui: fixed tooltips for headers in files/commits.

rhodecode/templates/changeset/changeset.mako

@@ -37,7 +37,7 b''
               rc_user = h.discover_user(c.commit.author_email)
           %>
           <div class="left-content-avatar">
-            ${base.gravatar(c.commit.author_email, 30, tooltip=True, user=rc_user)}
+            ${base.gravatar(c.commit.author_email, 30, tooltip=(True if rc_user else False), user=rc_user)}
           </div>
 
           <div class="left-content-message">

rhodecode/templates/files/files_source_header.mako

@@ -4,9 +4,11 b''
 <div class="summary">
   <div class="fieldset">
     <div class="left-content">
-
+      <%
+        rc_user = h.discover_user(c.commit.author_email)
+      %>
       <div class="left-content-avatar">
-        ${base.gravatar(c.file_last_commit.author_email, 30)}
+        ${base.gravatar(c.file_last_commit.author_email, 30, tooltip=(True if rc_user else False), user=rc_user)}
       </div>
 
       <div class="left-content-message">

rhodecode/templates/files/files_tree_header.mako

@@ -4,9 +4,11 b''
 <div class="summary">
   <div class="fieldset">
     <div class="left-content">
-
+      <%
+        rc_user = h.discover_user(c.commit.author_email)
+      %>
       <div class="left-content-avatar">
-        ${base.gravatar(c.commit.author_email, 30)}
+        ${base.gravatar(c.commit.author_email, 30, tooltip=(True if rc_user else False), user=rc_user)}
       </div>
 
       <div class="left-content-message">