pfSense

Merged #2975

Move copyright from ESF to Netgate

change traffic graphs to use d3.js

Fix syntax error on openvpn.widget.php

(cherry picked from commit 516e609ccb7a39fb27f52a69f11eee68f86974df)

Text typos in openvpn.widget.php
(cherry picked from commit 8da4847472e03195aeb73a1acedbc27f8af520d1)

Revise widget refresh timing

(cherry picked from commit 134ee13df54280441c25b047b406628eeebbb8db)

Added control to set dashboard widget refresh period
Start each widget refresh system after a short random delay to prevent all widgets hitting the server at the exactsame time
Fix issues wherein two widgets were resetting the refresh timer from the AJAX call, not the call-back function, thereby risking stepping on themselves...

Completed #6723\
by making the OpenVPN widget update dynamically

(cherry picked from commit f30e6bd49c773de28b5ec143add30fc900e7874d)

Code style and comments

No functional change - just making style consistent

(cherry picked from commit 9d3e8723171c727cf43338bd8e95ab2bb7e6a66c)

Save widget settings per user

For users that have "custom settings" enabled, save the "tool" settings
of their widgets on a per-user basis.
User that do not have "custom settings" enabled will continue to use and
save widget settings to/from the system-wide settings....