NRP-1361 apply upstream patch to fix regression

Ticket https://jira.brandwatch.com/browse/NRP-1361

This is caused by a regression issue introduced in `2.3.5` affecting pie charts to throw an JS error when re-rendered while being hidden.

The regression issue was fixed in https://github.com/highslide-software/highcharts.com/issues/1460 which will probably be released with `4.0.1`. The patch applies though cleanly to `2.3.5-bower`, all tests run fine and the issue raised in NRP-1361 will be fixed.

As all pie charts are affected, it seems more reasonable to create a new version `2.3.5-2` as discussed with Steve.

@spmason @mroderick or @grahamscott can you have a look?
Thanks
Can you add the bower change in here too?