Upgrade npm to v4.6.1
Upgrade npm to v4.6.1

ddanssaert/wekan,mario-orlicky/wekan,GhassenRjab/wekan,oliver4u/sap-wekan,jtickle/wekan,libreboard/libreboard,nztqa/wekan,wekan/wekan,johnleeming/wekan,nztqa/wekan,johnleeming/wekan,oliver4u/sap-wekan,libreboard/libreboard,mario-orlicky/wekan,wekan/wekan,ddanssaert/wekan,jtickle/wekan,wekan/wekan,johnleeming/wekan,wekan/wekan,GhassenRjab/wekan,johnleeming/wekan,mario-orlicky/wekan,ddanssaert/wekan,wekan/wekan,GhassenRjab/wekan,nztqa/wekan,jtickle/wekan,oliver4u/sap-wekan