This reverts commit cca17f5306.
Using textarea instead of input makes it possible to enter new lines,
which then are added to config.xml as "
". This breaks the whole
script, because these characters are passed to the command line as "\n".
Therefore, the script should rather remain a single-lined input field.
Signed-off-by: Tomasz Wilczyński <twilczynski@naver.com>