(S7v5-43) Added a few tests for Util libraries.  Updated some functions in the Image and Text libraries.
(S7v5-43) Updated Side7::UserContent to fix a call to a function whose name was changed.
(S7v5-43) Added some new tests for the Utils/ and User.pm libraries.
(S7v5-43) Added many missing tests, and updated a few of the libraries to fix broken tests.