minor code adjustment in preparation for plugins

• Fix week view column title for en-gb (PR220)
• Publish to NPM (2447)
• Detangle bower from npm package (PR179)

• internal refactoring in preparation for other views
• businessHours now renders on whole-days in addition to timed areas
• events in "more" popover not sorted by time (2385)
• avoid using moment's deprecated zone method (2443)
• destroying the calendar sometimes causes all window resize handlers to be unbound (2432)
• multiple calendars on one page, can't accept external elements after navigating (2433)
• accept external events from jqui sortable (1698)
• external jqui drop processed before reverting (1661)
• IE8 fix: month view renders incorrectly (2428)
• IE8 fix: eventLimit:true wouldn't activate "more" link (2330)
• IE8 fix: dragging an event with an href
• IE8 fix: invisible element while dragging agenda view events
• IE8 fix: erratic external element dragging

• view.title wasn't defined in viewRender callback (2407)
• FullCalendar versions >= 2.2.5 brokenness with Moment versions <= 2.8.3 (2417)
• Support Bokmal Norwegian language specifically (2427)

• Compatibility with Moment v2.9. Was breaking GCal plugin (2408)
• View object's title property mistakenly omitted (2407)
• Single-day views with hiddens days could cause prev/next misbehavior (2406)
• Don't let the current date ever be a hidden day (solves 2395)
• Hebrew locale (2157)

• buttonText specified for custom views via the views option
  • bugfix: wrong default value, couldn't override default
  • feature: default value taken from locale

• Arbitrary durations for basic/agenda views with the views option (692)
• Specify view-specific options using the views option. fixes 2283
• Deprecate view-option-hashes
• Formalize and expose View API (1055)
• updateEvent method, more intuitive behavior. fixes 2194

• removeEventSource with Google Calendar object source, would not remove (2368)
• Events with invalid end dates are still accepted and rendered (2350, 2237, 2296)
• Bug when rendering business hours and navigating away from original view (2365)
• Links to Google Calendar events will use current timezone (2122)
• Google Calendar plugin works with timezone names that have spaces
• Google Calendar plugin accepts person email addresses as calendar IDs
• Internally use numeric sort instead of alphanumeric sort (2370)

(Backport) removeEventSource with Google Calendar object source, would not remove

• Fixes to Google Calendar API V3 code
  • wouldn't recognize a lone-string Google Calendar ID if periods before the @ symbol
  • removeEventSource wouldn't work when given a Google Calendar ID