wes4store: fire event from timeout; allow wes req to restart if exception occurs

Added-to: 865307f316fdb795055da79b81ab34e062f174f0
Signed-off-by: Oleg Verych <olecom@gmail.com>
wes: separate wes-evented stores into 'App.store.WES'

Signed-off-by: Oleg Verych <olecom@gmail.com>