[doc] Polish 'Suggest Edit' links and asciidoctor config

The links would no longer be rendered with title/class, due to
compatibility mode being used (which I don't think is necessary).

Also simplified the Asciidoctor attributes to only keep the backend
ones in docs.gradle and the presentation ones in index.adoc (notably
the table of content style).

Removed the `linkattrs` attribute since it is no longer needed to
interpret roles in links.

docs/asciidoc/index.asciidoc

@@ -5,10 +5,9 @@ ifndef::host-github[:ext-relative: {outfilesuffix}]
 {appversion}
 :doctype: book
 :icons: font
-:toc:
+:toc2:
 :sectnums:
 :sectanchors:
-:linkattrs:
 
 include::aboutDoc.adoc[leveloffset=1]
 ifeval::["{backend}" == "html5"]
@@ -18,67 +17,67 @@ endif::[]
 
 include::gettingStarted.adoc[leveloffset=1]
 ifeval::["{backend}" == "html5"]
-https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/gettingStarted.adoc[Suggest Edit, title="Suggest an edit to the above section via github", role="fa fa-edit"]
+https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/gettingStarted.adoc[Suggest Edit^, title="Suggest an edit to the above section via github", role="fa fa-edit"]
 to "<<getting-started>>"
 endif::[]
 
 include::reactiveProgramming.adoc[leveloffset=1]
 ifeval::["{backend}" == "html5"]
-https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/reactiveProgramming.adoc[Suggest Edit, title="Suggest an edit to the above section via github", role="fa fa-edit"]
+https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/reactiveProgramming.adoc[Suggest Edit^, title="Suggest an edit to the above section via github", role="fa fa-edit"]
 to "<<intro-reactive>>"
 endif::[]
 
 include::coreFeatures.adoc[leveloffset=1]
 ifeval::["{backend}" == "html5"]
-https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/coreFeatures.adoc[Suggest Edit, title="Suggest an edit to the above section via github", role="fa fa-edit"]
+https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/coreFeatures.adoc[Suggest Edit^, title="Suggest an edit to the above section via github", role="fa fa-edit"]
 to "<<core-features>>"
 endif::[]
 
 //TODO see other sections from consuming.adoc
 
 include::kotlin.adoc[leveloffset=1]
 ifeval::["{backend}" == "html5"]
-https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/kotlin.adoc[Suggest Edit, title="Suggest an edit to the above section via github", role="fa fa-edit"]
+https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/kotlin.adoc[Suggest Edit^, title="Suggest an edit to the above section via github", role="fa fa-edit"]
 to "<<kotlin>>"
 endif::[]
 
 include::testing.adoc[leveloffset=1]
 ifeval::["{backend}" == "html5"]
-https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/testing.adoc[Suggest Edit, title="Suggest an edit to the above section via github", role="fa fa-edit"]
+https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/testing.adoc[Suggest Edit^, title="Suggest an edit to the above section via github", role="fa fa-edit"]
 to "<<testing>>"
 endif::[]
 
 include::debugging.adoc[leveloffset=1]
 ifeval::["{backend}" == "html5"]
-https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/debugging.adoc[Suggest Edit, title="Suggest an edit to the above section via github", role="fa fa-edit"]
+https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/debugging.adoc[Suggest Edit^, title="Suggest an edit to the above section via github", role="fa fa-edit"]
 to "<<debugging>>"
 endif::[]
 
 include::advancedFeatures.adoc[leveloffset=1]
 ifeval::["{backend}" == "html5"]
-https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/advancedFeatures.adoc[Suggest Edit, title="Suggest an edit to the above section via github", role="fa fa-edit"]
+https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/advancedFeatures.adoc[Suggest Edit^, title="Suggest an edit to the above section via github", role="fa fa-edit"]
 to "<<advanced>>"
 endif::[]
 
 
 [appendix]
 include::apdx-operatorChoice.adoc[leveloffset=1]
 ifeval::["{backend}" == "html5"]
-https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/apdx-operatorChoice.adoc[Suggest Edit, title="Suggest an edit to the above section via github", role="fa fa-edit"]
+https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/apdx-operatorChoice.adoc[Suggest Edit^, title="Suggest an edit to the above section via github", role="fa fa-edit"]
 to "<<which-operator>>"
 endif::[]
 
 [appendix]
 include::faq.adoc[leveloffset=1]
 ifeval::["{backend}" == "html5"]
-https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/faq.adoc[Suggest Edit, title="Suggest an edit to the above section via github", role="fa fa-edit"]
+https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/faq.adoc[Suggest Edit^, title="Suggest an edit to the above section via github", role="fa fa-edit"]
 to "<<faq>>"
 endif::[]
 
 [appendix]
 include::apdx-reactorExtra.adoc[leveloffset=1]
 ifeval::["{backend}" == "html5"]
-https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/apdx-reactorExtra.adoc[Suggest Edit, title="Suggest an edit to the above section via github", role="fa fa-edit"]
+https://github.com/reactor/reactor-core/edit/master/docs/asciidoc/apdx-reactorExtra.adoc[Suggest Edit^, title="Suggest an edit to the above section via github", role="fa fa-edit"]
 to "<<reactor-extra>>"
 endif::[]
 

gradle/doc.gradle

@@ -41,10 +41,7 @@ configure(rootProject) {
 		options = [
 				doctype: 'book'
 		]
-		attributes docinfo: '',
-				toc2: '',
-				'compat-mode': '',
-				'allow-uri-read': '',
+		attributes 'allow-uri-read': '',
 				imagesdir: "images/",
 				stylesdir: "stylesheets/",
 				stylesheet: 'reactor.css',