[*] StbMainApp: Fix warnings.

Signed-off-by: Anton Sergeev <Anton.Sergeev@elecard.ru>
[+] StbMainApp: Separate helper functions into individual file.

Signed-off-by: Anton Sergeev <Anton.Sergeev@elecard.ru>

Conflicts:
	StbMainApp/src/garb.c
[*] StbMainApp: Add into channel info dvb/atsc parameters.

Signed-off-by: Anton Sergeev <Anton.Sergeev@elecard.ru>