Prevent mobile table td collapsing issue

Fixes #1128

Author: sg00dwin

app/styles/_tables.less

@@ -123,6 +123,7 @@
            /* Behave like a row */
           border: none;
           border-bottom: 1px solid lighten(@table-border-color, 5%);
+          min-height: 38px; // prevent empty td collapsing
           padding: 3px 6px 2px 35%;
           position: relative;
           &:last-child {

dist/styles/main.css

@@ -4960,7 +4960,7 @@ body,html{margin:0;padding:0}
 .table-mobile.table-empty{border:0}
 .table-mobile.table-empty>tbody>tr>td{border:0;padding-left:0}
 .table-mobile>tbody>tr{border-top:2px solid #d1d1d1}
-.table-mobile>tbody>tr>td{border:none;border-bottom:1px solid #dedede;padding:3px 6px 2px 35%;position:relative}
+.table-mobile>tbody>tr>td{border:none;border-bottom:1px solid #dedede;min-height:38px;padding:3px 6px 2px 35%;position:relative}
 .table-mobile>tbody>tr>td:last-child{border-bottom:none}
 .table-mobile>tbody>tr>td:before{content:attr(data-title);position:absolute;top:8px;left:6px;width:35%;padding-right:10px;white-space:nowrap}
 }