Highlight the favorite and/or most used cards

[belohoub]

It would be probably useful to highlight the most used and/or favorite (marked) cards in the list.

The current list is sorted simply by last edit - it should be OK for short card lists, it could however cause a mess if there are a lot of cards.

There are several options:

1. create a dedicated view/list of favorite/most used cards only - similar to the "Favorite" view in Ubuntu-Touch Contacts
2. show favorite/most used cards in the front of the list - in the dedicated area
3. sort cards by usage frequency (this has the drawback of decreasing the stability of the list, which may result in decreased usability)

Currently, I personally prefer option 1.