* MPP-830 / Fix#58 / Fix#9 - Init feature commit: Add new CSS partial, assets, and new markup
* Add logged out page, function to dynamically update iframe size on init
* Add free mode logic (no reused aliases yet)
* Added mask lists UI (mock data) and logic for button ordering based on number of masks created
* Partial issue fix: 'Manage' button is now accesibile via up/down arrow keys (but not tab)
* Add logic to populate previous alias list and fill in input on click
* Add loading animation/logic to populate mask list for free users
* Add Premium UI/Logic
* Add search filter logic, build mask list for premium users
* Solved issue where in-page menu was slow to load
* Add logic to position the add-on expanded in-page menu above or below the relay icon, based on available screen real estate.
* Fix logo sizing issue in Chrome
* Cleaned up content setting logic, added logic to query/sort custom mask addresses for premium users
* Update global.css to use additional Protocol tokens, revised in-page CSS to use new custom properties
* Remove unused CSS and JS from refactor
* Add loading state for add-on
* Fix logic issue where users who had not registed a subdomain returned true, fixed issue where premium user with no alias set did not get out of loading state properly
* Fix#233, Fix#238, Fix#231 - Revise logic in context menu to sort domains by create_at field
* Move all button generation to helper functions, design review cleanup
* Add logic to hide search bar if not enough masks created, added logic to search bar to show number of masks visible, remove timeout logic for server calls, fix CSS issue where SVG path was not loading correctly
* Cleaned up helper link setter functions
* Remove unused code, add any TODO/BUG notes, fix issue where clicking directly on span would cause undefined error
* Self review edits
* Review feedback edits: CSS and JS
* Update inline SVG objects
* Review feedback edits: HTML and JS
* Review feedback edits: JS
* Fix issue where default domain (127.X) was not getting overwritten during config command
* Removing commented CSS, adjust logic to hide the search bar rather than remove it
* Add global style for error button state(s)
* Remove unused code, including error state handling for max'd out free account mask gen
* Removed commented code
* Fix#323 - Use the same logo colorway across the add-on
* FOLD adjust comment
* Fix#325 - Update listener event so that the in-page menu is closed when called