Migrate to GitLab

[jorgesumle]

Addresses #46

I considered that issue, labels and raw file URLs change, so I adapted them accordingly. However, the URL for graph statistics from robots.txt doesn't work on GitLab, you cannot select a time period, so I simplified it, and I remove the mention to Gratipay and that time distinction, since they are Liberapay contributors anyway.

The GitHub logo from the footer was changed as well.

One note: There was a translatable string that mentioned GitHub, so I executed find . -type f -print0 | xargs -0 sed -i 's/GitHub/GitLab/g'. Some languages (Czech and Polish) change nouns based on cases, and I'm not sure about their rules, so I did the best I could and marked those as fuzzy.

[jorgesumle]

There are some things we should do:

• Replace references to GitHub with references to GitLab
• Reconfigure Weblate to point to new repository
• Replace Travis with GitLab-CI
• Import salon, liberapay.org, payment-cards.js to GitLab
• Reconfigure Sentry
• Add GitLab group icon and description
• ... (did I forget something?)

[jorgesumle]

I need some help with GitLab-CI, for some reason PosgreSQL works for the ./recreate-schema.sh test, but doesn't work with tox. Is there an special way I should enter the posgres variables for Python programs? I added a commit with my progress, maybe it's a trivial fix I can't see.

[jorgesumle]

@Changaco, can you help me with the remaining issues? I don't think I have the right permissions. Once we're done, we should review and merge this.

[Changaco]

I am not ready to move Liberapay to GitLab and I don't want to put any effort into this right now.

It's unlikely that I'll approve a migration to GitLab as long as liberapay.com doesn't support GitLab as well as it supports GitHub (see issues containing "GitLab" in the title).

[MartinDelille]

Deleting .travis.yml block the process.

[jorgesumle]

GitLab doesn't use Travis, so it's useless to keep it. It can still be tested locally. I'll add it again if deemed necessary when we decide it's time to solve this issue.

[MartinDelille]

Yes but add gitlab support should not degrade github support which need the .travis.yml file to validate the pull request. Could you please revert your deletion?

[MartinDelille]

The gitlab migration shouldn't avoid github user to contribute. I'm wondering if it is possible to manage a project on both gitlab and github. Theorically yes, but practically this would increase the maintainer work and putting the information in two separated place.

[MartinDelille]

Restore .travis.yml

[MartinDelille]

I think this branch could be merged if:

• the conflict are fixed
• it should be clear that github stay the official repository
• gitlab is added in the social media links

[Panquesito7]

Suggested change

	Alternatively you can post a message in [our GitHub salon](https://gitlab.com/liberapay/salon).
	Alternatively, you can post a message in [our GitLab salon](https://gitlab.com/liberapay/salon).

[antenore]

LiberaPay is meant for open source projects, and it should have a as much as possible open source friendly Git repository.

While GitLab it's not the perfect solution in terms of Freedom, GitHub it's the worst. It's mainly a question of image.

Consider the GitLab program for open source projects, you get all the tools you need for 0$/year

I'd wouldn't be extreme in removing GitHub, but keeping it as a mirror, just deactivating the issues and politely refusing PR on GitHub.

Doing it in small steps it's feasible and it's worth to do it.