General Pane alignment

Aligns the 'General' tab of the metadata panel with the web client.
Review: 
See https://trello.com/c/OBUND1Za/82-general-pane-client-alignment and check if the ticked boxes in the 'Insight' section are implemented and working as expected. Some changes are not yet present in web, so whenever it says 'Match web' see also @gusferguson 's comment further down on the trello card, what it should look like.