2.0.alpha7

Seventh alpha release of the Panoptes 2.0 series.

This release introduces pivot tables - a way of summarising data tables.
Work on maps and genotypes are progressing well but are not ready to merge till next release.

Breaking changes:
Queries are no longer base64 encoded except on the wire - allowing them to be edited in config and specified in templates.

This release includes:

Features:

• #456 - Prototype Pivot table
• #379 - Warn if screen too small
• #464 - Only encode queries on the wire
• #438 - Key handling in Query Picker
• #462 - Auto set API endpoint
• #471 - Allow remote development

Fixes:

• #402 - Pie charts are now shown when all data is NULL
• #444 - Close the correct criteria in query picker
• #391 - Warn the user if they try to download unfeasibly large data