Generate image preview from remote ttf
Cache preview images
Generate previews
Note when generation is complete
Exlude non-latin fonts
Basic/Hacky font image previews in dropdown menu
Fix google preview image classes for fonts with space in name
Ugly, but all previews working!
Merge branch 'develop' into f/previews

Conflicts:
	classes/styles-font-menu.php
Convert font arrays to font classes
Rename all the things
Fix @imports
Rename to group and single, because google came before group
Generate standard CSS from class.
Move inline styles to enqueued CSS
Move dropdown.php to menu.php
Change readme header
Add prefix to Google classes
Remove ineffective height declaration
Rename class in comment