Support BlackBerry key series quick actions through keyboard.

List page
| key | action |
|--|--|
| `B` | back |
`N` / `SPACE` | next page
`A` | all item/unread
`P` / shift + `SPACE` | previous page
`R` | refresh
double click `R` | whole refresh
`S` | search
`V` | view
`C` | setting

Article page
| key | action |
|--|--|
`B` | back
`P` / shift + `SPACE` | previous
`N` / `SPACE` | next
`S` | star
double click `S` | share
`T` | tag
double click `T` | todoist
double click `E` | evernote
`V` | view