Empty activity string should not be sent, replies Error 500 instead.

[raquelgb]

Most likely we want a javascript to check this.

The error reads:

Template is missing

Missing template posts/index, application/index with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :coffee]}. Searched in: * "/home/arch/ging/src/vish/app/views" * "/home/arch/.bundler/ruby/1.9.1/social_stream-19d6479881eb/linkser/app/views" * "/home/arch/.bundler/ruby/1.9.1/social_stream-19d6479881eb/documents/app/views" * "/home/arch/.bundler/ruby/1.9.1/social_stream-19d6479881eb/base/app/views" * "/usr/lib/ruby/gems/1.9.1/gems/kaminari-0.13.0/app/views" * "/usr/lib/ruby/gems/1.9.1/gems/avatars_for_rails-0.2.6/app/views" * "/usr/lib/ruby/gems/1.9.1/gems/devise-1.5.3/app/views" * "/usr/lib/ruby/gems/1.9.1/gems/mailboxer-0.6.5/app/views"