Create upload.org

Docs/upload.org

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+* /Upload
+The flag console is the preferred way for adding and modifying flags
+in the database. It provides controls for adding, deleting and
+renaming flags, all of which are visible before being committed by
+someone with with password, which is set using the =staging-password=
+section in =appsettings.json=. Changes may be unstaged on an
+individual basis, but committed changes must be done all at once.
+
+Flags have several hard-coded requirements for being uploaded using
+the console. The image must be 16 by 11 pixels in size, be a PNG file
+and have a valid PNG header. Names of files must be under 100
+characters in length, and not contain either "," or
+"||". Additionally, you cannot name a flag "Empty, or there were
+errors. Please re-set your flags." as this is used, well, when someone
+hasn't set their flags right.