Basic page loading a Google Map.

- API key generated on my Google account for now.
- Very little customization right now.
- List of target controls as TODO in the file.
Refactoring: Extract JS and CSS from HTML.
Merge branch 'master' of github.com:Jacco/Perpetuality into map_n_controls
Embed the JS code in a namespace.

This should facilitate the integration in the main codebase.
Placeholders for controls.

- Bottom pane for overlays.
- Right pane for Objects (e.g. plants).
Merge branch 'master' of github.com:Jacco/Perpetuality into map_n_controls
Refactoring: Factoring out some code.
Merge branch 'master' of github.com:Jacco/Perpetuality into map_n_controls
Basic map and its panes.
Merge branch 'master' of github.com:Jacco/Perpetuality into map_n_controls