chore(package): update angular-gettext-tools to version 2.1.15
chore(package): update angular-gettext-tools to version 2.1.15

https://greenkeeper.io/
camptocamp/ngeo,Jenselme/ngeo,kalbermattenm/ngeo,kalbermattenm/ngeo,pgiraud/ngeo,camptocamp/ngeo,pgiraud/ngeo,adube/ngeo,ger-benjamin/ngeo,camptocamp/ngeo,adube/ngeo,ger-benjamin/ngeo,adube/ngeo,Jenselme/ngeo,adube/ngeo,camptocamp/ngeo,ger-benjamin/ngeo,Jenselme/ngeo,Jenselme/ngeo,kalbermattenm/ngeo,pgiraud/ngeo,camptocamp/ngeo