Resolved warnings.
Some minor code cleanup changes.
Minor changes in logs.
Changes in email sender.
Now it sends an email in html format also containing logs from application.
Some code cleanup changes in report sender.
Also added additional logs.
Minor css changes in playlist elements view.
Playlist events have been moced to separate class.
Removed mock from "remove" button, not it works as should. Each time track is removed playlist is also updated.
Changes in playlist view. It need some improvements and code cleanup changes. Now playlist element view is defined in html file instead of javascript. It separates view from logic.
Also added changes in pure-css library.