This reverts commit 8d0659b1e6.
The logic for temporary users is now centralized inside
MediaWiki core, so Vector has no need to check whether a user
is temporary and instead work with the data it's given.
Depends-On: I36815aaef81ec7368e240a780e90bd574785df74
Bug: T328725
Change-Id: Ie30dd6a77ef391f74a435e0b9df74793ffdf73bb
Rather than try to build individually build login, logout, and create account menu items, we handle them the same as all other user links menu items in Hooks.php. While Hooks isnt ideal, there currently isnt a good path for moving that code to SkinComponents until core provides menu data. In the meantime, this patch reduces code complexity and prevents bugs like T324638.
This approach also allows us to move user links logic from SkinVector22 to VectorComponentUserLinks.php, and ensures the user links dropdown contains multiple menus, which allows us to reuse styles from page tools dropdowns.
Expected 11 visual changes:
* minor visual change where the user links dropdown has an
additional 4px vertical padding.
This padding was originally added to the page tools dropdowns
per Alex's request, but Alex also said that dropdowns should share
the same spacing. This change makes the styles all consistent
* Order of talk and contribution links have been swapped
Bug: T289212
Bug: T319356
Bug: T328954
Change-Id: Iac0586893fec26a8a6c2c904ce08fbf1e19b339c
