Change config and view overrides to support Summernote in Talkabout comments for v8.6 onward

[JimKerslake]

Only if talkabout is being installed:

appsettings:

    "SummernoteOptions_TalkaboutComments": {
        "CustomConfigPath": "/talk/js/summernote-talkabout-comments-config.json",
        "CustomToolbarConfigPath": "/talk/js/summernote-talkabout-comments-toolbar-config.json",
        "FileBrowseUrl": "",
        "ImageBrowseUrl": "",
        "VideoBrowseUrl": "",
        "AudioBrowseUrl": "",
        "DropFileUrl": "",
        "CropFileUrl": "",
        "LanguageCode": ""
    },

/ Views/ Blog / CommentWrapperPartial

/ Views / Page/ CommentWrapperPartial

/ Views / Shared / CommentStylePartial.cshtml

/ Views / Shared / CommentScriptsPartial.cshtml

[JimKerslake]

It's OK for the template build task to be broken at the moment - changes in the views are sitting there waiting for for us to update the template NuGet references to 8.6 for that release.