WEBUI JS: Channel config - fix number up/down/assign for maj.min numbers
WEBUI JS: epg details dialog - do not show broadcast title in the dialog title
WEBUI JS: epg details dialog - move some styling to css
WEBUI JS: epg grid - add info action (icon) to be consistent with dvr
WEBUI JS: epg grid - escape regex for title linking
main: fix the pidfile handling (broken with the -u,-g movement)
main: fix pidfile variable initialization