Revert "Do not override timestamps for incoming toots" (#7330)

* Revert "Weblate translations 20180503 (#7325)"

This reverts commit dfa6bccb.

* Revert "Prevent timeline from moving when cursor is hovering over it (fixes #7278) (#7327)"

This reverts commit 58852695.

* Revert "Add pry-byebug (#7307)"

This reverts commit ab773e4d.

* Revert "Do not override timestamps for incoming toots (#7326)"

This reverts commit bd367918.