0.3.0 (beta)

Changelog:

• import of CWL is now possible from URL and from ZIP file
• implemented error tracing and logging (especially for unkown errors)
• send email on completion of run via unix sendmail (unix only, sendmail must be configured with a default sender email)
• the time is displayed for any message on the front end
• items in the file browser are now sorted
• several bug fixes
• (prepare for support of Janis and WDL workflows, this feature is still disabled in this release)

Many thanks goes to @illusional for help on implementing Janis parsing.