Fixes#6801
* Add example code for `IPageHandlerModelConvention` to the sample app (but it's not wired up to do anything really ... just shows how to implement it generally).
* Take sample app to 2.2.
* Drop the *Replace the default page app model provider* and sample code for it per instructions from engineering (see the issue).
* Take topic to 2.1+ (shed 2.0 content).
* XREF links (I really suspect that a VSC Extension could do 90% of the conversion work ... I should consider creating it.)
* Whoops - didn't mean to merge that to this branch!
* minor updates
* minor updates
* Fixed issue #8552
* added a note on URL
* made Auth URL consistent with the portal (rather than Visual Studio)
* added a cool dagger for Luke
* phrasing
* formatting
* formatting - re-adding code fenced URLs
* Update azure-ad-b2c-webapi.md
* SEO 2018 for /core/azure and /core/security directories
* SEO 2018 for /core/razor-pages directory
* added custom tag
* overview
* whats new to end
* fix migration node
* split fundamentals, move to end
* glob & loc, get started
* security node name
* security section
* azure, client-side, host
* several more sections
* redistribute tutorials
* proofread fixes
* move how to download section
* index files delete and redirect
* fix errors
* reorder some nodes
* scott feedback, flatten main tutorials node
* fix missed feedback items + other issues
* unflatten tutorials node
* move 'how to download'
* more tutorials node tweaks
* standardize view sample links
* db --> DB
* fix build error
* remove link from a parent node
* streamline node names
* xref links
* typos
* typo
* typos and revert some xref links
* scott feedback
* scott feedback
* feedback
* change node name
* safe storage-->protect
Fixes#9219
@JunTaoLuo Dan calls out the implicit versioning "for 2.1 SDK or later;" however, we don't usually version the doc content by SDK release. We might need to say something for this update in the passage that I'm adding to the All topic (*aspnetcore/fundamentals/metapackage.md*) about which SDK version this applies to. I don't know if that's something that you would like to do or what version to call out.
I also remove the version from the samples. We also assume that devs are using the latest SDK with our samples.
Fixes#9217
Came to fix versioning ... there was a build warning on another PR.
It looks like the whole topic should be versioned >=2.1, so that's what I did.
Addresses #8579
I might be getting the hang of **_find and replace_** now. 😝
This doesn't touch a couple that ref 2.2.0. I'll tidy those up on https://github.com/aspnet/Docs/issues/8518 after 2.2 RTM.
* Update ui-class.md
@pranavkm @Rick-Anderson These changes would clarify that multiple file structures can be used and give an example of one alternative.
* Update ui-class.md
* Update ui-class.md
* Update ui-class.md