Add reflection Jquery Lib (add's reflection to html objects)

Jira issue: APPPARTY-33
Add default "let's party"  image

Jira issue: APPPARTY-33
Send nowplaying info to guests
Show nowplaying cover in host (using refection lib)

Jira issue: APPPARTY-33
Add nowplaying info to start screen, using reflection lib

Jira issue: APPPARTY-33
Reduce canvas size to 140x140 pixels

Jira issues APPPARTY-62
Improves displaying of current playing media item

Jira issue: APPPARTY-33
Now updates the current played item in case nothing is played anymore

Jira issue: APPPARTY-33
Final fixes

Jira issue: APPPARTY-33
Merge pull request #33 from eelcocramer/martin

Adds current playing item to home screen