TODO for OC5: use CURRENT_TIMESTAMP for all databases. mysql supports it as a default for DATETIME since 5.6.5 [1]
as a fallback we could use <default>0000-01-01 00:00:00</default> everywhere
[1] http://bugs.mysql.com/bug.php?id=27645
http://dev.mysql.com/doc/refman/5.0/en/timestamp-initialization.html
http://www.postgresql.org/docs/8.1/static/functions-datetime.html
http://www.sqlite.org/lang_createtable.html
http://docs.oracle.com/cd/B19306_01/server.102/b14200/functions037.htm

put all the calls into one function and use tabs instead of spaces. Thanks to danimo for bugging me :-)

add a sane socket timeout so that the interface stays responsive with a slow or not working internet connection

use socket timeout of 10 sec to stay responsive even with a slow internet connection or a not working server

add ID to upload form and check if ID exist to avoid loading invalid javascript code for read-only views.

stripsplashes doesn't work if the slash is the only character -> creating file in root dir leads to "//filename"