TarLib: fixed appending in non-dynamic mode

Appending files now works at least for uncompressed tar files. Seeking
in compressed tars is not yet supported.

fixed third method of adding files in TarLib

You can give a path and file contents in an array. However this didn't
work because the file_exist() check was done before checking for an
array

fix lone zero block in TarLib created archives

fix use of constructor in TarLib

Slovak language update

Korean language update

Latvian language update

added event PAGEUTILS_ID_HIDEPAGE

added test for isHiddenPage()

removed redundant variables in tpl_include_page() (because of 3ff8773b)

added cut off points for mobile devices as parameters to style.ini

Corrected typo: ruke -> rule

Persian language update

Spanish language update

russian language update

Kazach language update

correctly check hash parameter in media dispatcher FS#2648

avoid broken browser_uid on IE

Internet Explorer 8 (and maybe others) seem to use different
capitalization in the ACCEPT_CHARSET header between "normal" requests
and AJAX requests. This causes a bro

avoid broken browser_uid on IE

Internet Explorer 8 (and maybe others) seem to use different
capitalization in the ACCEPT_CHARSET header between "normal" requests
and AJAX requests. This causes a browser UID mismatch and thus an
unecessary reauthentication.

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Removed acronyms for "Perl" and "PERL" as Perl is not an acronym.
See http://learn.perl.org/faq/perlfaq1.html#Whats-the-difference-between-perl-and-Perl-

Made striplangs.php executable

Made it easier to use, and consistent with the others bin/*php scripts

release preparations

RTL and IE7 fixes for code blocks

beautified code blocks, also using lighter background colour (FS#2444)

improved section highlighting styles

removed unnecessary print styles