Use automatic sizing of the content height of FullCalendar

When there is a large amount of all day events, the agenda views do not display
the time table because it computes a height of 0 (probably to keep the aspect
ratio).

issue8877
review260611002

bower.json

@@ -22,7 +22,7 @@
     "gettext.js": "^0.5",
     "c3": "^0.6",
     "papaparse": "^5.0",
-    "fullcalendar": "^3.0",
+    "fullcalendar": "^3.1",
     "mousetrap": "^1.6",
     "bootstrap-rtl-ondemand": "^3.3.4-ondemand",
     "Sortable": "sortablejs#^1.8.4"

src/view/calendar.js

@@ -46,6 +46,7 @@
                 header: header,
                 timeFormat: 'H:mm',
                 events: this.view.get_events.bind(this.view),
+                contentHeight: 'auto',
                 locale: Sao.i18n.getlang().slice(0, 2),
                 isRTL: Sao.i18n.rtl,
                 themeSystem: 'bootstrap3',