Add vim swp files to gitignore

Signed-off-by: Saggi Mizrahi <ficoos@gmail.com>
Add configurable ellipsis.

Some band have very long names and very long song names causing the text
to push all other indicators aside. By adding a maximum character count
this size can be limited.

Signed-off-by: Saggi Mizrahi <ficoos@gmail.com>
Change ellipsize option name and in prefs position
JShint fixes