FINERACT-2170: improve asciidoc: clean URIs, more (#4271)

* disable broken fineract-client API asciidoc include
  * this has a side effect of removing ~1,200 pages from the PDF
* remove duplicated/outdated text, reduce sources of truth
  * link to current FAQ
  * introduction is all references now... it was way out of date and also needed formatting fixes
* unset `show-link-uri` to improve PDF rendering
* remove unnecessary/unused `.asciidoctorconfig` file

fineract-doc/.asciidoctorconfig

@@ -1,8 +0,0 @@
-:years: 2015-2024
-:revnumber: 1.9.0-xxxx
-:draft: true
-:rootdir: {asciidoctorconfigdir}/..
-:generated: {asciidoctorconfigdir}/build/generated/asciidoc
-:diagramsdir: {asciidoctorconfigdir}/src/docs/en/diagrams
-:imagesdir: {asciidoctorconfigdir}/src/docs/en/images
-:icons: font