tweak look of csv icon

Netdisco/share/views/admintask.tt

@@ -39,7 +39,7 @@
       [% ELSIF task.provides_csv %]
       <span id="nd_device-name">
         <a id="nd_csv-download" href="#" download="netdisco.csv">
-          <i id="nd_csv-download-icon" class="icon-file-text-alt icon-large"
+          <i id="nd_csv-download-icon" class="text-info icon-file-text-alt icon-large"
             rel="tooltip" data-placement="left" data-offset="5" data-title="Download as CSV"></i></a>
       </span>
       [% END %]

Netdisco/share/views/device.tt

@@ -48,7 +48,7 @@
       <span id="nd_device-name">
         [% d.dns || d.name | html_entity %] &nbsp;
         <a id="nd_csv-download" href="#" download="netdisco.csv">
-          <i id="nd_csv-download-icon" class="icon-file-text-alt icon-large"
+          <i id="nd_csv-download-icon" class="text-info icon-file-text-alt icon-large"
             rel="tooltip" data-placement="left" data-offset="5" data-title="Download as CSV"></i></a>
       </span>
     </ul>

Netdisco/share/views/report.tt

@@ -31,7 +31,7 @@
       [% IF report.provides_csv %]
       <span id="nd_device-name">
         <a id="nd_csv-download" href="#" download="netdisco.csv">
-          <i id="nd_csv-download-icon" class="icon-file-text-alt icon-large"
+          <i id="nd_csv-download-icon" class="text-info icon-file-text-alt icon-large"
             rel="tooltip" data-placement="left" data-offset="5" data-title="Download as CSV"></i></a>
       </span>
       [% END %]

Netdisco/share/views/search.tt

@@ -34,7 +34,7 @@
       [% END %]
       <span id="nd_device-name">
         <a id="nd_csv-download" href="#" download="netdisco.csv">
-          <i id="nd_csv-download-icon" class="icon-file-text-alt icon-large"
+          <i id="nd_csv-download-icon" class="text-info icon-file-text-alt icon-large"
             rel="tooltip" data-placement="left" data-offset="5" data-title="Download as CSV"></i></a>
       </span>
     </ul>