Resolve "Test my workflow should support 'try it out" and CITATIONS"

Closes #193

See merge request !192

 * Show try-it-out button
 * Add citations tab

#193

Resolve "Early cancellation when downloading multiple files"

Closes #192

See merge request !191

Resolve "Don't delete empty string parameter"

Closes #190

See merge request !189

* Pin aws SDK

#190

Resolve "Fix download of html objects"

Closes #189

See merge request !188

#189

Resolve "Reorder landing page"

Closes #188

See merge request !187

#187

Resolve "Delete undefined parameters before execution"

Closes #187

See merge request !186

#187

Add landing page

See merge request !185

Resolve "Release pin for S3 SDK"

Closes #185

See merge request !184

#185

Resolve "Pin S3 sdk version"

Closes #184

See merge request !183

#184

Resolve "Support time formats in json schema"

Closes #183

See merge request !182

#182

Resolve "Adapt to new UI API"

Closes #182

See merge request !181

#182

Resolve "Allow type to be empty in parameter schema"

Closes #181

See merge request !180

#181

Resolve "Hide test workflow button when user is not developer"

Closes #180

See merge request !179

#180

Resolve "Show users email in admin view"

Closes #179

See merge request !178

#179

Resolve "Add icons in dashboard"

Closes #178

See merge request !177

#178

Resolve "Upload multiple files"

Closes #177

See merge request !176

Resolve "Set correct header when downloading multiple files"

Closes #176

See merge request !175

#176

Resolve "Download mutliple files with FileSystemAPI"

Closes #175

See merge request !174

#175

Resolve "Add Newsfeed"

Closes #160

See merge request !160

Resolve "View HTML files instead of downloading them"

Closes #174

See merge request !173

 * Update terms of use

#174