YCBB: +timestamps storyboard; +sort. comnts; auto-adjust; several fixes

- Added clickable timestamps to the storyboard. Resolves #8 ;
- Added option to choose the default sorting of the comments popup;
- Now the storyboard is auto adjusted when the screen is rotated or the window is resized;
- Moved the channel popup's close button to the other side, as it was getting on top of the other popup's close buttons;
- Fixed the storyboard getting the wrong URL;
- Fixed white space in the storyboard when there's not enough screen space, or when the last chunk is smaller than the others on multi-column;
- Fixed the storyboard's last chunk being half visible in some phones;
- Fixed the storyboard images being selectable on left-click when not finished loading;
- Fixed the comment popup's bottom not being completely visible in some phones;
- Fixed the description popup not working correctly when there's a quotation mark in the video description;
- Fixed the & character being displayed as & in the transcription.