Improved search functionality

[dreamtheater39]

Modified the existing search functionality. Changes -

1. New "Artist" field to specify which artist to play
2. If no search string provided and only an "Artist" is provided - it plays the top tracks of that Artist. Adds the top tracks to the player queue
3. If search string and artist fields are filled - it searches better by matching tracks with the provided artist name
4. If the "artist" field is not used - it uses the standard search approach. But now adds tracks to the queue (defined by limit parameter)

Now you can search for cover songs....for example - search: Master of puppets artist: Dream Theater

[fcusson]

Hi @dreamtheater39, I'm working on merging #366 because it has been a problem plaguing the project for a while, but when this is done and I have received feedback from the user, I'll be working on merging your improvement

[fcusson]

@dreamtheater39, have you add any chances of resolving those branch conflict?