Use grid of cards for team gallery

[jarrodmillman]

@steppi @rgommers For the outstanding translations, you need to turn the team page (e.g., content/pt/teams.md) into a bundle (e.g., content/pt/teams/index.md):

$ mkdir content/pt/teams
$ git mv content/pt/teams.md content/pt/teams/index.md

Once you commit that, you will have the following directory structure

$ tree content/pt/teams
content/pt/teams
└── index.md

Then in content/pt/teams/index.md change

{{< include-html "static/gallery/maintainers.html" >}}

{{< include-html "static/gallery/docs-team.html" >}}

{{< include-html "static/gallery/web-team.html" >}}

{{< include-html "static/gallery/triage-team.html" >}}

{{< include-html "static/gallery/survey-team.html" >}}

{{< include-html "static/gallery/emeritus-maintainers.html" >}}

to

### Maintainers

{{< grid1 file="maintainers.toml" columns="2 3 4 5" />}}

### Docs team

{{< grid1 file="docs-team.toml" columns="2 3 4 5" />}}

### Web team

{{< grid1 file="web-team.toml" columns="2 3 4 5" />}}

### Triage team

{{< grid1 file="triage-team.toml" columns="2 3 4 5" />}}

### Survey team

{{< grid1 file="survey-team.toml" columns="2 3 4 5" />}}

### Emeritus maintainers

{{< grid1 file="emeritus-maintainers.toml" columns="2 3 4 5" />}}

All the translations will share the same toml files (i.e., the one in content/en/teams):

$ tree content/en/teams
content/en/teams
├── docs-team.toml
├── emeritus-maintainers.toml
├── index.md
├── maintainers.toml
├── survey-team.toml
├── triage-team.toml
└── web-team.toml

FYI, this has nothing to do with the fact that it is the default language. Hugo first looks in each
translation's own bundle. If it doesn't find the resouce in the translation's own bundle, it will look
in another translation's bundle. If there are mutliple options, hugo will choose the translation
with greatest respective Weight.

Finally, as mentioned in #733, after the next release we will need to rename grid1 to grid.

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[rgommers]

That sounds reasonable to me. I'll defer to @steppi here, since he knows better what the impact on translation machinery is.

[steppi]

That sounds reasonable to me. I'll defer to @steppi here, since he knows better what the impact on translation machinery is.

From my understanding, we can resync Crowdin by closing its pull request and letting it re-open another one, so I think it should be fine.