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* remove duplicated/outdated text, reduce sources of truth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 it was way out of date and also needed formatting fixes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/build.gradle

@@ -24,10 +24,11 @@ asciidoctorj {
 
     attributes = [
         version: "${project.version}",
+        docdate: new Date(),
         generated: "${buildDir}/generated/asciidoc",
         imagesdir: "${buildDir}/generated/images",
         diagramsdir: "${buildDir}/generated/diagrams",
-        years: '2015-2024',
+        years: '2015-2025',
         revnumber: "${project.version}".toString(),
         rootdir: "${rootDir}".toString(),
         baseurl: 'fineract.apache.org',