refactor: normalize Angular and Angular.js sections/resources (#5525)

* chore: improve angular / angular.js listings

- Wellnaming section
- fix book title, add format, add creators as is seen in file

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Wellnaming section
- fix book title, add format, add creators as is seen in file

via EbookFoundation#4940

* chore: improve angular / angular.js listings

- Wellnaming sections (typescript>angular, javascript>angularjs)
- Add free resources to complete listing with at least 2 items, mainly from html.it website.
- fix titles, add format, add creators as is seen in linked files

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Move Angular resources from Angular.js to TypeScript
- Add more resources to avoid single sections

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Sections (typescript>angular, javascript>angularjs)
- Add free resources to complete listing with at least 2 items.
- fix titles, add format, add creators as is seen in linked files

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Move Angular resources to TypeScript
- Well-naming sections
- fix book title, add format, add creators as is seen in files

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Move Angular resources from Angular.js to TypeScript
- Add more resources to avoid single sections
- Complete notes, titles, format, authors

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Well-naming section
- Complete notes, titles, format, authors

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Handle both as anchor. angular and angular.js

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Add http://plnkr.co as valid playground for both
- Add https://stackblitz.com as valid playground for both

via EbookFoundation/free-programming-books#4940

* chore: Angular.js > AngularJS and other pitfails

- Use AngularJS as title/name
- Fix some errors with heading levels in Javascript/Typescript section
- Finish to move some resources accoding their content

via EbookFoundation/free-programming-books#4940

* feature: sections crosslinks as blockquotes

* feature: sections crosslinks as blockquotes

Mainly for AngularJS/Angular, Javascript/Typescript,
web, databases listing sections

* chore: revert scoping crosslinks only to Angular

books/free-programming-books-et.md

@@ -4,7 +4,7 @@
 * [C Sharp](#c-sharp)
 * [Java](#java)
 * [JavaScript](#javascript)
-    * [Angular](#angular)
+    * [AngularJS](#angularjs)
     * [Vue](#vue)
 * [PHP](#php)
 * [Python](#python)
@@ -35,12 +35,12 @@
 * [Javascript](http://lepo.it.da.ut.ee/~epuman/javascript.html) - Ella Puman, Tartu ÜLikooli õppematerjal
 
 
-##### Angular
+#### AngularJS
 
-* [Angular](http://www.cs.tlu.ee/teemad/get_file.php?id=400) - Tallinna Ülikooli õppematerjal
+* [AngularJS raamistiku õppematerjal](http://www.cs.tlu.ee/teemad/get_file.php?id=400) - Tallinna Ülikooli, Sander Leetus (PDF)
 
 
-##### Vue
+#### Vue
 
 * [Vue](http://www.cs.tlu.ee/teemaderegister/get_file.php?id=715) - Tallinna ülikooli õppematerjal