Check collaborator status, analytics, social, modify organizations

Features

• Hide add, edit, administration links by default unless user is logged in and has collaborator access. Logged in users without collaborator access will be shown a warning. (#67)
• Google analytics tag support (#46) (Thanks @JJediny!)
• Digital analytics program support (Thanks @JJediny!)
• Open graph & twitter card support (Thanks @JJediny!)
• Hypothesis.io support (Thanks @JJediny!)
• Add/edit Organizations (#26)
• Basic DCAT support on dataset pages (Thanks @pezholio!) #75
• Add upgrade button to admin page (#51)

Patches

• Hide Show X more item on categories/organizations lists when X is 0
• Wrapped organization on dataset page inside a panel (Thanks @JJediny!)
• npm run watch rebuilds javascript directly into _site/ directory to skip jekyll's copying

And our shiny new logo, thanks to @JJediny