fixed link wizard being appended to every div.dokuwiki (FS#2395) and changed div.dokuwiki to just .dokuwiki (some templates have the class in the body)

This fix is alright. The action gets escaped by DokuForm's use of buildAttributes()

For some reason trailing/leading underscores were allowed when uploading
files. But the rest of the code (eg. listing or downloading files) never
supported this. This patch removes this special case for uploading files
to streamline ID cleaning of pages and media files.

The uploader now just strips a bunch of common special chars. This is
not a complete cleanID() implementation. A full clean is done
server-side on uploading.

On certain environments, stream_select might produce temporary errors
when file descriptors are running scarce.

IE8 can't substr() with negative offsets.

this fixes another IE javascript problem in edit mode

A trailing comma created an empty array item causing IE8 to choke.

To avoid problems when an AJAX request takes a bit longer in the ACL
manager, a throbber is shown while loading the info.

Translators need to add another string.

adds html label to plugins in plugin management page

i needed to disable all plugins to figure out which plugin was causing
template error, so it was quite annoying to click on the tiny checkbox

added html label so i could at least click on the plugin name to toggle
checkbox state

just minor capitalization corrections

eo: language updates

de/de-informal language updates / fixed using mailprefix in registration and password lost notifications