Query-fix in com_content article modal

This change prevents the query from being executed when the value is 0. There is never an article with ID 0 and especially when there are more than one modal select per page, you have several unnecessary queries.
Fixing codestyle
Fixing codestyle
Improving Contact modal field
Improving Categories modal field
Improving Newsfeeds modal field
Code cleanup
Merge branch 'master' of github.com:Hackwar/joomla-cms into patch-1

Conflicts:
	administrator/components/com_categories/models/fields/modal/category.php
[imp][libraries] use overridable layouts for pagination
[fix][libraries] add B/C for pagination overrides done with chromes
[imp] copyright + version fixes
Adding License to punycode.js files
[imp] missing index.html files
[doc] Add example configuration for MacOS

This addition is just a comment line that helps when setting the system testing
Merge pull request #3113 from javigomez/system_testing_mac

[doc] Add example configuration for MacOS Thanks Javier!
Updating installation lang: ckb-IQ
Merge pull request #2795 from Hackwar/patch-1

Query-fix in com_content article modal
Merge pull request #3102 from phproberto/pagination

Pagination