Instead of rendering tabs upfront, initialize them to a `Loading…`
indicator and then render them when clicked.
Use a `rendered_tabs` object to cache rendered HTML strings instead of
re-loading a tab (e.g. if it is selected, another tab is selected, and
then it is selected again).
These repositories (`zulip-ios-legacy` and `zulip-android`) are
deprecated, and as such should not have their own tabs, but still
should be included in the total contributions count.
Marco Burstein
sinwar
Rohitt Vashishtha
Tommy Ip