Update index.html.erb

Fix the display of the user to use forem_name (optionally with link) instead of a raw object.to_s dump.
Merge pull request #595 from montanalow/patch-1

Update index.html.erb
Rails 4.1.6 support.
Merge pull request #600 from Loremaster/rails4

Rails 4.1.6 support.
Remove deprecation warning for emoji
Merge pull request #602 from pierallard/rails4

Remove deprecation warning for emoji