Replaced duckmode logo with welcome screen logo. Updated welcome screen
logo.
removed the alpha from the duckmode logo
searchbar background and divider is now invisible for duckmode
added dark logo for duckmode
dark background is now a solid color instead of drawable
duckmode icon is now set to 62% width
added some extra bottom margin to duckmode logo, it seemed off-center without it
changed searchbar side padding to same as top padding
changed general padding of duckmode to 6dp
Merge pull request #100 from duckduckgo/duck_mode_graphics

Duck mode graphics