Improve "Fullscreen" mode on dashboard

[pdepaepe]

Hello,

To gain a maximum of visibility on widgets (tv display), i think it should be great to also hide graylog menu in this mode.

Thanks.

[zhdanovartur]

+1

[chrismusty]

+618915151655481456

[joschi]

@chrismusty That's a strange phone number.

[chrismusty]

hah!

Its how bad I want the dashboard to
a/ use percentages for modules
b/ hide menu
c/ allow interactive inputs (change date range without "editing")

[chrismusty]

sorry "use percentages for module widths"