DVR: Time Based Recorder
DVR: Add all weekdays as default
DVR WEB UI: Fix the DVR tabs bug introduced with latest changes (weekdays)
WEBUI JS: rename the timerec to time schedule
DVR: Fix the retention condition

Introduced by "[htsp] allow clients to get/set dvr priority and retention"
DVR: Timer Based Recording - create "next day" entries, fix regular updates
DVR: Link the autorec/timerec with dvr_config_t
WEBUI JS: Fix null error in idnode_grid..
DVR: Move the de->de_config init to the right place
DVR: Cache the default dvr config, argument cleanups
config: backup - exclude epggrab/*.sock files
DVR: Fix dvr_config_find_by_name_default()
DVR: dvr_config_name cleanups
HTTP server: use cookie to remember the logout state
ACL: Fix username match
ACL: set the default (no filter) prefix when user entered empty or wrong prefix