portico: Refresh deactivated realm notice page every 60 seconds.
portico: Refresh deactivated realm notice page every 60 seconds.

This helps avoid users being confused if a realm was temporarily
deactivated as part of getting a clean backup.

Fixes: #11757.

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