Applied further changes to ZipWriter

Instead of throwing an exception, you better set the date to zero, so a
date prior 1980-01-01 00:00 UTC will also be possible.
Added support for directory date
Applied small optimization

To prevent redundancy
Fixed formatting
Added support for Joomla

See
http://beta.woltlab.com/index.php/Thread/3347-PasswordUtil-Erg%C3%A4nzung-f%C3%BCr-Kunena-Joomla
Improved FileReader class and fixed issue in AttachmentPage
Added jquery & jquery-ui source

Just for file consistence
Changed filename

Another file consistence thing
Added minified version of nestedSortable
Applied update of jquery timepicker

Additionally, i've added the source of it
Small style optimizations
Merge branch 'master' of github.com:WoltLab/WCF
Merge pull request #1485 from soettl/fileReaderImprovement

Improved FileReader class and fixed issue in AttachmentPage
Merge pull request #1474 from SoftCreatR/joomla

Add support for Joomla
add a forgotten span
Merge pull request #1488 from illyaine/patch-4

add a forgotten span
Improved WCF.InlineEditor API
Updating minified JavaScript files
Fixed creation of attachment directories
Using FileUtil::makePath() instead