Resolve "Descriptor list URL"

Closes #154

See merge request !145

Resolve "Repository permissions"

Closes #153

See merge request !144

- Dataset files are publicly readable when published
- Markdown attachments in /content/ are made publicly readable on add

- Anonymous users have ROLE_ANONYMOUS and ROLE_EVERYONE
- Registered users have ROLE_USER and ROLE_EVERYONE

Resolve "Updated /me controller"

Closes #152

See merge request !143

Resolve "New version of Descriptor"

Closes #151

See merge request !142

Resolve "Release 1.7"

Closes #149

See merge request !141

Resolve "Excel metadata controller"

Closes #148

See merge request !140

- Using appropriate data types for rows
- Temp file

use temp file for analysis

Resolve "Dataset.crops"

Closes #147

See merge request !139

Resolve "Descriptor references"

Closes #137

See merge request !129

Repository controller accepts metadata as string

See merge request !138

- form/multipart is not happy with content type application/json

Resolve "Add species"

Closes #146

See merge request !137

Resolve "Extra data on DescriptorList"

Closes #145

See merge request !136

- Associate descriptor#publisher with descriptorList#publisher
- Instructions for parsing data from Excel

Resolve "Remove dataset API"

Closes #144

See merge request !135

Resolve "Extend filters with general text search"

Closes #143

See merge request !134