Don't try to make tables if they already exist

I don't know why the grep statement used spaces around the name,
but that clearly didn't match the output I saw when I ran it manually:

    List of databases
    Name|Owner|Encoding|Collate|Ctype|Access privileges
    postgres|timshadel|UTF8|C|C|
    slate_development|timshadel|UTF8|C|C|
    slate_test|timshadel|UTF8|C|C|
    template0|timshadel|UTF8|C|C|=c/timshadel
    timshadel=CTc/timshadel
    template1|timshadel|UTF8|C|C|=c/timshadel
    timshadel=CTc/timshadel