increase style version in base template

batiskaf/templates/jinja2/base.jinja

@@ -17,7 +17,7 @@
     <link href='/static/favicon.ico?v=3' type='image/x-icon' rel='shortcut icon'/>
     <link href="/static/bower_components/Bootflat/css/bootstrap.min.css" rel="stylesheet">
     <link href="/static/bower_components/Bootflat/bootflat/css/bootflat.min.css" rel="stylesheet">
-    <link href="/static/less/_.min.css?v=15" rel="stylesheet">
+    <link href="/static/less/_.min.css?v=16" rel="stylesheet">
     <link href="/static/less/icons.css?v=1" rel="stylesheet">
     <link href="/static/css/select2.min.css" rel="stylesheet">
     <link rel="stylesheet" type="text/css" href="/static/bower_components/sweetalert/lib/sweet-alert.css">