Automatically manage 'experimental' feature documentation in release notes

Originally called ""Getdown DEVELOP Channel" and "Getdown TEST-RELEASE Channel" linkCheck fails if there's a link to whatsNew#experimental or releaseHistory from other help pages"

Each new release build needs to have the 'experimental' feature set updated or otherwise the documentation links omitted if there are no experimental features in that release.

For 2.11.4.0, and 2.11.5.0 linkCheck fails unless an experimental tag is manually added to the whatsNew for the release.

build 04-Sep-2024 06:08:07
build 04-Sep-2024 06:08:07 > Task :linkCheck FAILED
build 04-Sep-2024 06:08:07 Checking help file links
build 04-Sep-2024 06:08:07 Invalid anchor: experimental at line 92 of /help/html/menus/desktopMenu.html
build 04-Sep-2024 06:08:07
build 04-Sep-2024 06:08:07 Results:
build 04-Sep-2024 06:08:07 159 distinct help targets
build 04-Sep-2024 06:08:07 159 help mappings
build 04-Sep-2024 06:08:07 0 invalid targets
build 04-Sep-2024 06:08:07 32 unused targets
build 04-Sep-2024 06:08:07 uniprotfetcher: html/features/uniprotsequencefetcher.html
build 04-Sep-2024 06:08:07 overviewprefs: html/features/preferences.html#overview
build 04-Sep-2024 06:08:07 cdnafeatures: html/features/codingfeatures.html
build 04-Sep-2024 06:08:07 startupprefs: html/features/preferences.html#startup
build 04-Sep-2024 06:08:07 ensemblfetch: html/features/ensemblsequencefetcher.html
build 04-Sep-2024 06:08:07 io.modellerpir: html/io/modellerpir.html
build 04-Sep-2024 06:08:07 structureandpaefromfile: html/features/structurechooser.html#loadfromfile
build 04-Sep-2024 06:08:07 pdbmcviewer: html/features/pdbviewer.html
build 04-Sep-2024 06:08:07 workingwithpae: html/features/paematrices.html
build 04-Sep-2024 06:08:07 groovy.colours: html/features/groovy.html#groovyColours
build 04-Sep-2024 06:08:07 seqmappings: html/features/seqmappings.html
build 04-Sep-2024 06:08:07 uniprotfts: html/features/uniprotsequencefetcher.html#uniprotfts
build 04-Sep-2024 06:08:07 splitframe.mirrorfonts: html/features/splitView.html#mirror
build 04-Sep-2024 06:08:07 subtMatrices.pam250: html/calculations/scorematrices.html#pam250
build 04-Sep-2024 06:08:07 search: html/features/search.html
build 04-Sep-2024 06:08:07 viewingpdbs.reps: html/features/viewingpdbs.html#viewreps
build 04-Sep-2024 06:08:07 alformats: html/io/fileformats.html
build 04-Sep-2024 06:08:07 strucprefs: html/features/preferences.html#structure
build 04-Sep-2024 06:08:07 siftsmapping: html/features/siftsmapping.html
build 04-Sep-2024 06:08:07 chimera.annotxfer: html/features/chimera.html#annotxfer
build 04-Sep-2024 06:08:07 pdbfts: html/features/pdbsequencefetcher.html#pdbfts
build 04-Sep-2024 06:08:07 newkeys: html/features/newkeystrokes.html
build 04-Sep-2024 06:08:07 importvcf.attribs: html/features/importvcf.html#attribs
build 04-Sep-2024 06:08:07 seqfeatures.settings.selcols: html/features/featuresettings.html#selectbyfeature
build 04-Sep-2024 06:08:07 structuresvia3dbeacons: html/features/structurechooser.html#3dbeaconssearch
build 04-Sep-2024 06:08:07 jalarchive: html/features/jalarchive.html
build 04-Sep-2024 06:08:07 newsreader: html/webServices/newsreader.html
build 04-Sep-2024 06:08:07 jalviewcltool: html/features/commandline.html#script
build 04-Sep-2024 06:08:07 popMenuAddref: html/menus/popupMenu.html#addrefannot
build 04-Sep-2024 06:08:07 splitframe.virtualfeats: html/features/splitView.html#virtualfeats
build 04-Sep-2024 06:08:07 paematrixformat: html/io/paematrixformat.html
build 04-Sep-2024 06:08:07 overview: html/features/overview.html
build 04-Sep-2024 06:08:07 0 invalid map urls
build 04-Sep-2024 06:08:07 0 invalid image attributes
build 04-Sep-2024 06:08:07 503 internal href links (110 with anchors)
build 04-Sep-2024 06:08:07 0 invalid internal href links
build 04-Sep-2024 06:08:07 1 invalid internal anchor links
build 04-Sep-2024 06:08:07 111 external href links
build 04-Sep-2024 06:08:07 External links not verified as internet not available
build 04-Sep-2024 06:08:07 *** Failed ***
build 04-Sep-2024 06:08:07