Favioli 2.00

- fix issue where ff is auto-loading favicons on sites with favicons
- fix issue where regex strings are not properly parsed

- primarily, this lets us segregate our models from custom emojis
- custom emojis need to be stored at storage.sync root-level for space

TODO: do not store favicons in browser.storage, index by description

- closes emoji selector on re-pressing init button
- adjust popup positioning

- fix enableflags
- code cleanup, renaming

- add observer to see when clicking out of selector
- code cleanup
- style updates

- fixes issues where emoji selector doesnt work
- adds "override all" feature flag

- use bext
- remove browser extension boilerplate
- add emoji-selector

- in 2.00, this will be replaced by extension icon notification