two_factor: Disable prefix in OurAuthenticationForm.
two_factor: Disable prefix in OurAuthenticationForm.

In two factor authentication every step adds a unique prefix to the fields,
due to this the name of the form fields differs from the HTML fields. If
we do not do this we will have to change the name in the HTML, which
will cause the change in tests.

andersk/zulip,punchagan/zulip,timabbott/zulip,showell/zulip,punchagan/zulip,andersk/zulip,synicalsyntax/zulip,kou/zulip,brainwane/zulip,rht/zulip,andersk/zulip,synicalsyntax/zulip,punchagan/zulip,kou/zulip,rht/zulip,hackerkid/zulip,eeshangarg/zulip,dhcrzf/zulip,eeshangarg/zulip,zulip/zulip,timabbott/zulip,synicalsyntax/zulip,shubhamdhama/zulip,shubhamdhama/zulip,punchagan/zulip,zulip/zulip,jackrzhang/zulip,tommyip/zulip,eeshangarg/zulip,shubhamdhama/zulip,tommyip/zulip,andersk/zulip,hackerkid/zulip,mahim97/zulip,synicalsyntax/zulip,rht/zulip,zulip/zulip,tommyip/zulip,mahim97/zulip,timabbott/zulip,punchagan/zulip,dhcrzf/zulip,showell/zulip,hackerkid/zulip,kou/zulip,jackrzhang/zulip,hackerkid/zulip,kou/zulip,rishig/zulip,zulip/zulip,rht/zulip,jackrzhang/zulip,kou/zulip,eeshangarg/zulip,andersk/zulip,rishig/zulip,showell/zulip,mahim97/zulip,tommyip/zulip,mahim97/zulip,dhcrzf/zulip,brainwane/zulip,brainwane/zulip,rishig/zulip,synicalsyntax/zulip,andersk/zulip,timabbott/zulip,dhcrzf/zulip,brainwane/zulip,brainwane/zulip,shubhamdhama/zulip,punchagan/zulip,synicalsyntax/zulip,hackerkid/zulip,jackrzhang/zulip,zulip/zulip,eeshangarg/zulip,rht/zulip,shubhamdhama/zulip,eeshangarg/zulip,jackrzhang/zulip,rishig/zulip,rishig/zulip,jackrzhang/zulip,brainwane/zulip,showell/zulip,tommyip/zulip,rishig/zulip,rishig/zulip,dhcrzf/zulip,punchagan/zulip,synicalsyntax/zulip,timabbott/zulip,andersk/zulip,rht/zulip,timabbott/zulip,timabbott/zulip,zulip/zulip,kou/zulip,showell/zulip,shubhamdhama/zulip,dhcrzf/zulip,hackerkid/zulip,dhcrzf/zulip,tommyip/zulip,eeshangarg/zulip,rht/zulip,shubhamdhama/zulip,showell/zulip,jackrzhang/zulip,tommyip/zulip,kou/zulip,brainwane/zulip,mahim97/zulip,zulip/zulip,hackerkid/zulip,mahim97/zulip,showell/zulip