Remove the pagination hack in index.html.

It appears that since I originally implemented blog pagination, an
update has been made to Jekyll that allows pagination in a subdirectory
of the site. This obviates the need for the pagination hack on the front
page, which is great news.
Move EC positions into a Jekyll data file.

Jekyll introduced data files in v1.3.0! This is a feature that I wanted
when I originally wrote the site.
Move carousel items to _data/.

Also, add a comment on (and validation for) limiting the number of
carousel items to 5.
Fix navbar highlighting on calendar page.

I moved the calendar page from /resources/calendar to /calendar which
breaks the otherwise hierarchical nature of the site's page structure.
Merge pull request #68 from kevinwang/jekyll-ec-data

Move EC positions into a Jekyll data file.
Merge pull request #67 from kevinwang/remove-pagination-hack

Remove the pagination hack in index.html.
Merge pull request #70 from kevinwang/navbar-calendar-fix

Fix navbar highlighting on calendar page.
Merge branch 'master' of github.com:prog694/prog694.github.com

Conflicts:
	index.html
Add rest of ec photos except max