IE11 triggers an 'input' event whenever an input is focussed
or loses focus. Thus this causes an endless loading loop as soon
as the view is re-rendered. To prevent this, this remembers the
previous search term and ignores events where the term has not
changed.
Fixes https://github.com/nextcloud/server/issues/5281
Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>
0c7d745074