* Added new home profile icon images for upcoming new start page.
* New start page design and structure. New profiles app created (stub).
* First time sidebars/modals. ProfileManager JSON docs and parsing.
* First working ProfileManager. WIP
* Added mechanisms for knowing when to show first-time help content.
* Refactor to clean up initial flows and intro help display.
* New DevTools views structure. Added stub for profile snapshot tool.
* Created initial profiel snapshot generator devtool.
* Rationalized profile generation and parsing with shared constants.
* Fixed location SVG path issues in predefined profiles.
* Improved unit tests for ProfileManager.
* Added SVG fragment install and generation for predefined profiles.
* Fixed unit tests depending on MEDIA_ROOT.
* Fixed remaining unit tests for MEDIA_ROOT isolation.
* Moved JSON initialization profiles to 'assets' dir.
* Refactored all the help content and added view mode ref dialog.