Hiding Header not working when material isn't used

[patagonaa]

When "headerVisible" is set to false and "material" isn't used, the whole csv import is invisible.

[patagonaa]

(potentially a duplicate of #79, #62)

[dosehealthcare]

The problem is that the html is missing a closing div tag after this:

<md-switch class="ng-csv-import-header-switch" ng-model="header"></md-switch>

should be

<md-switch class="ng-csv-import-header-switch" ng-model="header"></md-switch></div>