Symfony-docs: Fix merge mistakes

[wouterj]

Yesterday, the GH tool merged the 3.0 branch into the 2.3 branch while rebasing a PR. I didn't notice this and merged everything p to the master branch. This means that every branch no includes the 3.0 version. The commit causing trouble is: fefc8a0426b6a438d7132b3035b1f5e0fab90a42 and 139e2e774c4e68bf3a4fda8882b91a3775a76757

I've tried to revert all merges and revert the troubled merges. This doesn't work correctly though, as it means we have to revert all 2.3...3.0 changes in 2.3. When merging 2.3 to 2.7, all 2.3...3.0 changes are still removed and 2.7 becomes the 2.3 docs.

At the moment, I have the feeling that a hard reset + force push is the only solution to this problem.

@stof do you may have a clue on how to fix this?

[lyrixx]

just push -f ; It will be much simpler for everyone

[xDaizu]

Git merge mistakes happen

https://twitter.com/xDaizu/status/722715391038988288

[wouterj]

Fix it with a force push. Thanks for the quick feedback @lyrixx and @xDaizu!

[linaori]

For hose who arrive on this page after trying to contribute but having an out of sync branch, make sure to fetch from your remote and do a hard reset on the branch you're working on. I recommend you to only do this on the branches that are out of sync.

Note that if you reset a branch you are working on, you will lose all changes. Make sure to have stashed your changes away or prepare a patch to apply afterwards!

$ git fetch upstream
remote: Counting objects: 106, done.
remote: Compressing objects: 100% (7/7), done.
remote: Total 106 (delta 66), reused 65 (delta 65), pack-reused 34
Receiving objects: 100% (106/106), 20.13 KiB | 0 bytes/s, done.
Resolving deltas: 100% (68/68), completed with 34 local objects.
From https://github.com/symfony/symfony-docs
 + 4712b10...bbec4cc 2.3        -> upstream/2.3  (forced update)
 + cf61d87...7b8b8aa 2.7        -> upstream/2.7  (forced update)
 + bb08698...5439c7a 2.8        -> upstream/2.8  (forced update)
 + bb08698...61b4cdd 3.0        -> upstream/3.0  (forced update)
 + ec7b299...f164fd8 master     -> upstream/master  (forced update)

And resetting the master branch afterwards

$ git reset --hard upstream/master
HEAD is now at f164fd8 Fix syntax error