Merge pull request #66 from ChrisBoesch/master

Updates
Merge pull request #67 from ChrisBoesch/master

Updates
Merge pull request #187 from ruijunhuang2010/master

change icon
Merge pull request #68 from ChrisBoesch/master

Updates
Merge pull request #1 from ChrisBoesch/master

update
Challenge Message Submission with an attachment
Merge pull request #188 from ShaikDawood/master

Challenge Message Submission with an attachment
small icons on address bar for all pages
Merge pull request #189 from LI-HE/master

small icons on address bar for all pages
Merge pull request #69 from ChrisBoesch/master

Updates
Challenges Update

- Added link button
Merge pull request #190 from ShaikDawood/master

Challenges Update
Merge pull request #45 from ChrisBoesch/master

update