Enhance and simplify design

[mariobehling]

• remove shadows or semi-transparent on the screen
• change color of Speed, Animation, Effects to
  • non-highlighted gray font and highlighted black with red underline font
  • remove semi-transparent background of menu items
• increase size of animations in buttons to full button width
• change buttons to less rounded, e.g. save button
• Emoticons: Remove scrolling and expand all emoticons instead
• Ensure red colors, e.g. on top bar and highlighted buttons are the same as in the previous app version
• Ensure app background is white