* delete unused files, move webpack configs to their own directory
* start of improved developer documentation, moving everything to developer_docs/ directory
* documentation updates
- Set the preview canvas to `display:block` to remove vertical spacing
caused by the default value, which was making a full-height canvas cause
vertical scrolling, and the vertical scrollbar caused horizontal
scrolling
- Wrap the preview content in a container with `position:relative` and
no other visible content, so that the full-height iframe excludes the
height of the preview frame header, preventing it from going beyond the
height of the page
Restrict the z-index of the console (and any other preview panes) to the
context of the preview container, thereby preventing any internal
content from overlaying a modal. `z-index:0` is used as a more
browser-compliant form of `isolation:isolate` or `contain:paint` to
create an isolated stacking context.
* Comment out show/hide file options action creators.
* Comment out show/hide file options properties
* Comment out show/hide file options action definitions
* Comment out constants for show/hide options action types
* Comment out props for show/hide options and replace with component state.
* Comment out show/hide edit file name reducers.
* Comment out show/hide edit file name actions.
* comment out show/hide edit file name action types.
* Comment out show/edit file name props from IDEView component
* Replace show/hide edit filename props in FileNode component with local state
* Remove commented out code from previous changes for moving redux state back into component state.
* Add binding to this for new functions. And tidy up of code.
