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"

check if element really exists before calling it. (e.g. for public shared files view, elements like "navigation" doesn't exist)