remove all tablesorter assets and css

lib/tables.less

@@ -136,57 +136,3 @@ table {
   .span11    { .tableColumns(11); }
   .span12    { .tableColumns(12); }
 }
-
-
-
-// TABLESORTER
-// -----------
-// Support for the tablesorter jQuery plugin
-
-table {
-  // Tablesorting styles w/ jQuery plugin
-  .header {
-    cursor: pointer;
-    &:after {
-      content: "";
-      float: right;
-      margin-top: 7px;
-      border-width: 0 4px 4px;
-      border-style: solid;
-      border-color: @black transparent;
-      visibility: hidden;
-    }
-  }
-  // Style the sorted column headers (THs)
-  .headerSortUp,
-  .headerSortDown {
-    background-color: #f7f7f9;
-    text-shadow: 0 1px 1px rgba(255,255,255,.75);
-  }
-  // Style the ascending (reverse alphabetical) column header
-  .header:hover {
-    &:after {
-      visibility:visible;
-    }
-  }
-  // Style the descending (alphabetical) column header
-  .headerSortDown,
-  .headerSortDown:hover {
-    &:after {
-      visibility:visible;
-      .opacity(60);
-    }
-  }
-  // Style the ascending (reverse alphabetical) column header
-  .headerSortUp {
-    &:after {
-      border-bottom: none;
-      border-left: 4px solid transparent;
-      border-right: 4px solid transparent;
-      border-top: 4px solid @black;
-      visibility:visible;
-      .box-shadow(none); //can't add boxshadow to downward facing arrow :(
-      .opacity(60);
-    }
-  }
-}