Force columns with width as % be integer pixels (#5981)

Author: spinnercat

src/js/core/factories/GridRenderContainer.js

@@ -634,7 +634,8 @@ angular.module('ui.grid')
 
  } else if (gridUtil.endsWith(column.width, "%")) {
  // percentage width, set to percentage of the viewport
- width = parseFloat(parseInt(column.width.replace(/%/g, ''), 10) / 100 * availableWidth);
+ // round down to int - some browsers don't play nice with float maxWidth
+ width = parseInt(parseInt(column.width.replace(/%/g, ''), 10) / 100 * availableWidth);
 
  if ( width > column.maxWidth ){
  width = column.maxWidth;