[Code Style] Changes in tag standards: Plugins. Fixes #4639
[Code Style] Changes in tag standards: frontend components. Fixes #4637

[Code Style] Changes in tag standards: frontend com_config

[Code Style] Changes in tag standards: frontend com_contact

[Code Style] Changes in tag standards: frontend com_content

[Code Style] Changes in tag standards: frontend com_finder

[Code Style] Changes in tag standards: frontend com_newsfeeds

[Code Style] Changes in tag standards: frontend com_search

[Code Style] Changes in tag standards: frontend com_tags

[Code Style] Changes in tag standards: frontend com_users

[Code Style] Changes in tag standards: frontend com_weblinks

[Code Style] Changes in tag standards: frontend com_wrapper

[Code Style] Changes in tag standards: frontend com_newsfeed

[Code Style] Changes in tag standards: frontend com_mailto
missing language string
Update default_items.php

revert change
Update en-GB.com_newsfeeds.ini

add missing string
Merge pull request #4677 from brianteeman/patch-2

missing language string
Add mocker for JInput
[fix] Restore support for rendering custom fieldsets on 'joomla.edit.params'. Fixes #4284

Retrieve all fieldsets instead of params and attribs only

Define ignore_fieldsets consistently

Add ignore_fieldsets

Code style

Further implementation of ignore_fieldsets

Restore options tabs in com_content

Update modal.php with related changes to restore support for rendering custom fieldsets when using JLayout 'joomla.edit.params'

Update modal.php with related changes to restore support for rendering custom fieldsets when using JLayout 'joomla.edit.params'
Update helper.php
Doc blocks in the mockers
Merge branch 'staging' of github.com:joomla/joomla-cms into staging
Add methods to retrieve mock input object
Inject the mock input object in the Application tests
[cs]  Remove duplicate path in JLayoutFile #4673 (FIX: #4673)
System Tests Clean Up
Removing Selenium RC Tests for ACL
Removing Selenium RC Tests for Articles
Removing RC Tests for Com_users
Removing RC Tests for Control_panel
Removing RC Tests for Languages