Survey editing/taking Javascript and CSS fixes. This patch adds some cosmetic changes and functional fixes: - UI now removes all of the field content when a field is deleted, - CSS tweaks, and jQuery hack to specialize comment CSS, - fixed JS path in take.html. Reviewed by: Pawel Solyga (with some small changes)

"""
Code used in a couple of places to work with the current thread's environment.
Current users include i18n and request prefix handling.
"""

try:
    import threading
    currentThread = threading.currentThread
except ImportError:
    def currentThread():
        return "no threading"