Replace #26661, fix#25979
Not perfect, but usable and much better than before. Since it is quite
complex, I am not quite sure whether there would be any regression, if
any, I will fix in first time.
I have tested the related pages many times: issue list, milestone issue
list, project view, user issue list, org issue list.
When read the code: `pager.AddParam(ctx, "search", "search")`, the
question always comes: What is it doing? Where is the value from? Why
"search" / "search" ?
Now it is clear: `pager.AddParamIfExist("search", ctx.Data["search"])`
Since `modules/context` has to depend on `models` and many other
packages, it should be moved from `modules/context` to
`services/context` according to design principles. There is no logic
code change on this PR, only move packages.
- Move `code.gitea.io/gitea/modules/context` to
`code.gitea.io/gitea/services/context`
- Move `code.gitea.io/gitea/modules/contexttest` to
`code.gitea.io/gitea/services/contexttest` because of depending on
context
- Move `code.gitea.io/gitea/modules/upload` to
`code.gitea.io/gitea/services/context/upload` because of depending on
context
