Fix bugs regarding names

[AetherUnbound]

This PR addresses a few things:

• add_directory is now add_batch
• Spaces are allowed in batch names #116
• Batch names have uniqueness constraints #104
• Add batch now gives a proper error when the batch name doesn't meet criteria #112
• Batch names and usernames are trimmed #117
• Usernames are now case regulated #120
• Add batch and export buttons render a little better on mobile (currently live here http://138.68.15.82:9001/)