Revert "Merge branch 'release/2.4.0'"

This reverts commit 5575704874c6e793ad0922f8eef3e369940707f0, reversing
changes made to cf0ba08f6fcb9d9d040b4c604dc89fe6f74c19d8.
~ Even better workaround for very badly written system plugins which output Javascript without a trailing semicolon and/or newline, leading to Javascript errors. This is not a bug in our software, it's a bug in those badly written plugins and WE have to work around THEIR bad code!
Language update
Update installation script with new class being used by the parent FOF installation script helper class
~ Using an HTTP 303 header for Link type items instead of 302
# [LOW] ARS link plugin: filtering the list made it impossible to select an item (thanks @Bakual)
Language update

Signed-off-by: Nicholas K. Dionysopoulos <nicholas@akeebabackup.com>
Support for pdomysql driver to be added in Joomla! 3.4
Fix DB Schema in installation
Merge pull request #55 from Horizak/development

Fix DB Schema in installation
Translations update
Added stats collection
Removed empty files created by phpStorm
Removed comment for test
We have to return false if we're not collecting the stats, otherwise the number 1 will be printed
Merge pull request #56 from akeeba/feature/stats

Added stats collection
Improve stats collection: support for different database types
Generate a new site id if the site moved to a new address
Translation updates