tests/: Add basic iCal import tests

Tests ical-002.sh and ical-003.sh currently fail due to bugs in duration
and exception parsing.

Reported-by: Håkan Jerning <jerning@home.se>
Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

test/Makefile.am

@@ -41,6 +41,9 @@ TESTS = \
 	event-004.sh \
 	event-005.sh \
 	event-006.sh \
+	ical-001.sh \
+	ical-002.sh \
+	ical-003.sh \
 	next-001.sh \
 	search-001.sh \
 	bug-002.sh \
@@ -97,4 +100,7 @@ EXTRA_DIST = \
 	data/apts-event-006 \
 	data/apts-recur \
 	data/conf \
+	data/ical-001.ical \
+	data/ical-002.ical \
+	data/ical-003.ical \
 	data/todo