Your site has been hacked. The akismet plugin and twenyfifteen theme had those calls, which was NOT normal.
You have a highcharts folder in ~/4Year-Plan.com/WordPress/wp-content/plugins/ and ~/4Year-Plan.com/wp-content/plugins/ but those were not plugins at all, just a dump of JS files, which is again, not normal.
I've made a backup folder of your site in 4Year-Plan.com.hack and I removed the highcharts folders. You should open a support ticket for a full account scan, however. I've done a rudimentary cleanup to let you back into your site.