ctests: pdf export for korean documents

Use Nanum-font for tests to get a readable pdf with luatatex/xelatex
Typo
Gracefully return a value if an invalid author is requested
Revert "Return an error on file-open only when a filename is given"

Reverted because of
http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg181795.html.

This reverts commit a4d881c58e7ba0f1ee703ac067b5105a26b513e2.
Revert "Return an error if file-open is called with a non-absolute path"

Reverted because of
http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg181795.html.

This reverts commit 9c4461deea8eabb5bc025a08fa6ce11cb1c9e6fd.
Revert "Fix opening files from command line"

Reverted because of
http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg181795.html.

This reverts commit d1db30a188b17b88702282cd24374f6179f2789d.
This is not a recoverable error.
Add comment (thanks Enrico)
Add comments about putenv() usage

Again thanks to Enrico.
Update layouttranslations
Fix EOLs
installer: fix bug in dictionary installation

- we have a new dictionary and a new thesaurus so that we must increase the search list
- update the dictionary mirror list
zh_CN.po: fix a typo reported in bug #9033
* ko.po : update from Dal Ho Park.
* cs.po
ctest export: smal improvements

1.) Use of regex to ignore group of tests
2.) If default output format is pdf2(pdflatex), the try to check also
  for xelatex and lualatex
sv.po: fix a translation bug #7830
Include child's own authors when using BufferParams from master.
Fix typo in configFunctions.h (wrong define for the header)
de.po: Style.