Restyled header, page color scheme and borders.
Modified player info box model.
Prettified playlist menu.
Header restyling almost ready.
Improved playlist header styling.
Styled playlist options.
Fixed tooltip styling.
Made header buttons bigger by padding.
Fixed playlist renaming and deleting style.
Made playlist record padding smaller.
Fixed selector for the renamed (id) "playlist-options-btn".
Updated selectors for updated header namings.
Styled playlist options tooltips.
Playlist options styling is done for now.
Added max-width to playlist options.
Merge branch 'restyle-page'

I restructured and restyled the page.
I changed the page color and border scheme.
I merged the playlist menu and the profile options, and moved them to the header, into
playlist options.