Update about page

Moved information about comments and markdown to a note.
And added link to 2012 competition.
Competitor page

An alphabetical list of competitors, with links to their
user pages. Show stats: no. photos, first, second and
third place finishes.
Competitor sort order

sort by lower case name, to get preferred alphabetical
ordering
Update photo icon
Merge branch 'competitor-page' into develop
Merge branch 'develop'
Add more stats to the secret scoreboard

Most logins, logouts, notes and comments. Enter all
competitions. Add bio. Count extra photos.
Merge branch 'stats-2' into develop
Merge branch 'develop'