Resolve "Theme primary, secondary colors not defined" and "Move common styles"

Closes #170 and #155

See merge request !118

Resolve "Loading... component"

Closes #176

See merge request !120

Resolve "Unnecessary authentication"

See merge request !117

Resolve "Unnecessary authentication"

Closes #177

See merge request !115

Resolve "Download links don't work"

Closes #171

See merge request !113

- Webpack replaced process.env with a JSON object and we don't have access to process.env

- This allows us to proxy file download requests

Resolve "Controlled Vocabulary pages"

Closes #161

See merge request !114

```
<Authorize role="ROLE_ADMINISTRATOR">
  Render when user is Admin!
</Authorize>
```

- Page<T> checks for this.content
- ItemsEditor will refuse to render with more than 100 items (paginate!)
- SelectPartner uses pretty item list

- Sorry!

Resolve "Webpack server application"

Closes #154

See merge request !112

- Updated CI for new packaging
- Removed gulp and gulpfile.js

#165 Confirmation dialog

Closes #165

See merge request !111

#160 Crop editing

Closes #160

See merge request !110

- `<CropCard`
- Delete a crop
- Wrapper for /crops pages
- Only ROLE_ADMIN can access crop edit form

Resolve "Broken styles after several page refreshing"

Closes #173

See merge request !109

Resolve "Configurable descriptor Card"

Closes #172

See merge request !108

- <DescriptorCard brief owner version.... displays brief card, but includes owner and version
- <DescriptorCard complete owner version... displays complete card, but excludes owner and version

Resolve "Update dataset details"

Closes #169

See merge request !107

- Moved components to ./c/
- Introduced <Section component

Resolve "Upgrade dependencies"

Closes #167

See merge request !106