Changed multiple strings and ui tweaks

Changed weights of textview headers for Percentage so longer string can
fit. What to do about help icons? Removed red "This may take a few
moments" string. Changed submission button from "Done" to "Save".
Changed Percentage string to "Percent area infested". Removed feedback
easter egg. Lame. Removed empty space on main screen for "upload
sightings". Raw resources are still there, though