The logic of "URLJoin" is unclear and it is often abused.
Also:
* Correct the `resolveLinkRelative` behavior
* Fix missing "PathEscape" in `ToTag`
* Fix more FIXMEs, and add new FIXMEs for newly found problems
* Refactor "auth page common template data"
Change all license headers to comply with REUSE specification.
Fix#16132
Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
MakeAbsoluteAssetURL should just url join the static url prefix on to appurl
if it is not an absolute path - this is because StaticURLPrefix is an absolute
prefix not a relative prefix to the app sub url.
Fix#14422
Signed-off-by: Andrew Thornton <art27@cantab.net>