dashboards done for now. fixes #370
make dashboard permissions editable for users

removes dashboard:* permissions from the default reader permission set.
this means readers cannot create dashboards!

fixes Graylog2/graylog2-web-interface#474
don't show dashboard edit icon if the user doesn't have the necessary permission

issue #474
sorry i broke all the widgets lol. fixes #476
styled reset permission dialog. #466
style streams & dashboard permissions. fixes #466
style admin checkbox
changes to graph generation button
disable quickterms csv export for now #239
report stream throughput in API and interface

fixes Graylog2/graylog2-web-interface#459
Merge git://github.com/Graylog2/graylog2-web-interface into develop