don't list pic/head cook twice in shifts.
add feedback tag to a footer
change meal info and discussion info into public and member infos. supply info show dialogs properly according to whether a user is a member of the coop. also show public info in next meal box publicly.
don't show extra meal info if it contains empty string or whitespace
Merge pull request #41 from daf-/calendar

public + private info meals and info dialogs