Merge pull request #17 from coolvin/master

added toprankings
Delete a
a lot of work done
Merge branch 'master' of github.com:huygaa11/tinyworld
login/registration
zzz
modified files
final modification
challengelist
this is challenege
created challenges database
Merge branch 'master' of github.com:huygaa11/tinyworld
modified errors
challenge.ejs
Merge branch 'master' of github.com:huygaa11/tinyworld
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All except profile should be just about done
Added background image to profile