analytics: Change subgroup and labels lists to dictionary in views.py.
analytics: Change subgroup and labels lists to dictionary in views.py.

A dict is more semantically appropriate than two lists with an assertion
that they be the same length.

vabs22/zulip,jrowan/zulip,kou/zulip,SmartPeople/zulip,punchagan/zulip,rishig/zulip,rht/zulip,hackerkid/zulip,punchagan/zulip,zulip/zulip,timabbott/zulip,vabs22/zulip,punchagan/zulip,brainwane/zulip,ryanbackman/zulip,timabbott/zulip,verma-varsha/zulip,Galexrt/zulip,timabbott/zulip,hackerkid/zulip,andersk/zulip,brainwane/zulip,jackrzhang/zulip,ryanbackman/zulip,tommyip/zulip,brainwane/zulip,punchagan/zulip,brainwane/zulip,eeshangarg/zulip,kou/zulip,SmartPeople/zulip,jrowan/zulip,amanharitsh123/zulip,jrowan/zulip,brainwane/zulip,j831/zulip,tommyip/zulip,jrowan/zulip,dhcrzf/zulip,hackerkid/zulip,verma-varsha/zulip,j831/zulip,zulip/zulip,tommyip/zulip,rishig/zulip,synicalsyntax/zulip,vabs22/zulip,synicalsyntax/zulip,eeshangarg/zulip,vaidap/zulip,hackerkid/zulip,dhcrzf/zulip,timabbott/zulip,showell/zulip,j831/zulip,andersk/zulip,dhcrzf/zulip,eeshangarg/zulip,jackrzhang/zulip,rht/zulip,vabs22/zulip,tommyip/zulip,jackrzhang/zulip,amanharitsh123/zulip,rht/zulip,rht/zulip,j831/zulip,Galexrt/zulip,SmartPeople/zulip,verma-varsha/zulip,jphilipsen05/zulip,ryanbackman/zulip,zulip/zulip,Galexrt/zulip,kou/zulip,amanharitsh123/zulip,kou/zulip,jphilipsen05/zulip,showell/zulip,showell/zulip,shubhamdhama/zulip,brockwhittaker/zulip,jackrzhang/zulip,zulip/zulip,Galexrt/zulip,tommyip/zulip,jackrzhang/zulip,jphilipsen05/zulip,zulip/zulip,hackerkid/zulip,brockwhittaker/zulip,brainwane/zulip,andersk/zulip,mahim97/zulip,mahim97/zulip,ryanbackman/zulip,brockwhittaker/zulip,rishig/zulip,rishig/zulip,ryanbackman/zulip,showell/zulip,shubhamdhama/zulip,christi3k/zulip,Galexrt/zulip,jphilipsen05/zulip,andersk/zulip,Galexrt/zulip,eeshangarg/zulip,amanharitsh123/zulip,amanharitsh123/zulip,verma-varsha/zulip,mahim97/zulip,synicalsyntax/zulip,vabs22/zulip,mahim97/zulip,mahim97/zulip,SmartPeople/zulip,jackrzhang/zulip,dhcrzf/zulip,eeshangarg/zulip,verma-varsha/zulip,tommyip/zulip,vaidap/zulip,punchagan/zulip,jphilipsen05/zulip,tommyip/zulip,Galexrt/zulip,rishig/zulip,christi3k/zulip,christi3k/zulip,showell/zulip,dhcrzf/zulip,vaidap/zulip,brockwhittaker/zulip,jrowan/zulip,zulip/zulip,hackerkid/zulip,rishig/zulip,shubhamdhama/zulip,rht/zulip,SmartPeople/zulip,brockwhittaker/zulip,shubhamdhama/zulip,vaidap/zulip,punchagan/zulip,jphilipsen05/zulip,j831/zulip,eeshangarg/zulip,jrowan/zulip,vabs22/zulip,hackerkid/zulip,verma-varsha/zulip,kou/zulip,eeshangarg/zulip,timabbott/zulip,christi3k/zulip,christi3k/zulip,showell/zulip,synicalsyntax/zulip,zulip/zulip,kou/zulip,mahim97/zulip,dhcrzf/zulip,andersk/zulip,ryanbackman/zulip,amanharitsh123/zulip,timabbott/zulip,rht/zulip,SmartPeople/zulip,andersk/zulip,jackrzhang/zulip,j831/zulip,shubhamdhama/zulip,vaidap/zulip,synicalsyntax/zulip,andersk/zulip,dhcrzf/zulip,showell/zulip,kou/zulip,rht/zulip,rishig/zulip,timabbott/zulip,synicalsyntax/zulip,shubhamdhama/zulip,brainwane/zulip,brockwhittaker/zulip,vaidap/zulip,christi3k/zulip,shubhamdhama/zulip,synicalsyntax/zulip,punchagan/zulip