Added regex check in javascript to check for good name entries
Fixed some miscellaneous issues with adding a name to the cs-brackets file

*Append a number to duplicate entries, starting with 2 (not 1)
*Fix(?) regex so that 'Jo' doesn't match 'John'.
Also have name submissions ignore case
Added a flock() to the file to ensure we don't clobber bracket entries with the massive
number of people that want to enter my bracket contest.
Merge branch 'marty-save-entries' of github.com:p-reynolds/bracket into marty-save-entries