restaurant logo file name is now composed from the restaurant name.
fixed file extension.
changed logos to be uploaded directly under logo folder without the model id.
added restaurant logos according to new file convention.
removed old restaurant logos.
removed cafe birnbaum old logo.
added a default restaurant logo in case no upload was made.
the hummus nachmani logo is incorrect.
invalid logo.
fixed a bug that if the logo doesn't exist then don't try to fetch it.
temporary update of logo.