[editor] Use the proper icon in the editor header for Spark SQL
<!-- ko case: 'shell' --><i class="fa fa-fw fa-terminal"></i><!-- /ko -->
<!-- ko case: 'spark' --><svg class="hi hi-fw"><use xlink:href="#hi-spark"></use></svg><!-- /ko -->
<!-- ko case: 'spark2' --><svg class="hi hi-fw"><use xlink:href="#hi-spark"></use></svg><!-- /ko -->
+ <!-- ko case: 'sparksql' --><svg class="hi hi-fw"><use xlink:href="#hi-spark"></use></svg><!-- /ko -->
<!-- ko case: 'sqoop' --><svg class="hi hi-fw"><use xlink:href="#hi-sqoop"></use></svg><!-- /ko -->
<!-- ko case: 'sqoop1' --><svg class="hi hi-fw"><use xlink:href="#hi-sqoop"></use></svg><!-- /ko -->
<!-- ko case: 'tables' --><i class="fa fa-fw fa-table"></i><!-- /ko -->
