add java version of hamming assignment
Merge remote-tracking branch 'upstream/master' into add-java-hamming
Ruby/Raindrops skip added to every test except the first.
Merge pull request #1133 from RichardWigley/master

Ruby/Raindrops_test.rb skip added to every test except the first.
Simplify nitpick menu
Give guest a reasonable default for nitpicker languages
Point out that reduce is fine in Elixir accumulate

The readme seemed to imply otherwise.
Add pythagorean triplet exercise for elixir
Use lc in example
Merge pull request #1132 from petehuang/add-pythagorean-triplet-elixir

Add pythagorean triplet exercise for elixir
Merge pull request #1136 from pminten/accumulate-readme-exception-for-elixir

Point out that reduce is fine in Elixir accumulate
Merge branch 'add-java-hamming'
renamed mutationAt to hammingContributionAt and removed 'Of' from one of the test method name - as per pull-request feedback
Merge pull request #1138 from wdjunaidi/master

Add java hamming
Separate account page and profile page
Tweak account page
Get completed assignments directly from database.
Do not reject future exercises
Ditch the summary page
Tweak 404 page