Add in information about the CLI site.

This will make it easier for beginners to find the site for help.
Make rna-transcription in Elixir conform to README
Update test wording to match updated significance
Merge pull request #1335 from drueck/javascript-rna-transcription

Update js rna-transcription test wording to match updated significance
Merge pull request #1334 from drueck/elixir-rna-transcription

Make rna-transcription in Elixir conform to README
Update v1.0 front-end stuff
Delete CSS overriding language color
Implement close/reopen exercise (v1.0)
Merge pull request #1324 from msgehard/cli_help_clarification

Add in information about the CLI site.
Link to completed assignments in account (v1.0)
Use new exercise notifications in v1.0 sidebar
Fix syntax error
Add alerts to sidebar (v1.0)
Deactivate delete-all for notifications (v1.0)
Fix notification scopes
Fix notifications in v1.0 sidebar
Put deprecated method back. For now.
Update CSS for code byline