[Epic] Editor Defaults

[adelaidemt]

• The workspace name should prefill with something. Likely it should be a timestamp, like “2020-01-14-abc”. #186
• The base branch list in creating a new workspace gets very big. This should be a select box (rather than a radio button). It should default to the current branch #187
• When creating a new file, just automatically append .yaml to the end of the filename, if the user doesn’t enter it themselves. #188
• By default, the page list should be open and the workspace list should be collapsed #189
• When adding new modules, we should have placeholder text and images so you know what it looks like and the user knows what to replace #190
• Page details should be it's own section and auto minimized #191
• Improve the UI of the "empty" state for lists #192
• Change "Media URL" to "Upload Image" #195
• Trashcan icon should always say in the right corner #194
• Uneditable workspace #196
• Setting up/editing meta data and social share data in a straightforward place in the editor #201
• Built-in long form content module that can be inserted anywhere on the pages #203
• Grid overlay/toggle in preview pane #204
• Preview parameters in editor #170