* add countries flags
add flags & simplify/sizing
add flagkit
* add flags to Extensions Filter
* add flags to Sources & Extensions screen
* show language flag in Library
* showing source icon in library
* Change language icon for local source from Folder to Globe
* adjust size & padding for icon & badge
* Setting enable/disable source icon
allow change feed's order manually by moving up/down
partially implement #130
* add feed_order
- add/migrate feed_order column
- auto increament feed_order when adding new feed
- showing feed in order using feed_order
* refactor code to support feedOrder
* swap feed order
* Fix generating feed's order when no feed existed
* feat: banner showing updating status
* showing progress for updating
* showing progress for syncing & backup restoring too
* preferences for progress banner