Revert "Changed data error detection"

This reverts commit 003ea9bb7e6c26cc6cfa378fce0c2dd7b92d455d.
Removed uneeded reference
Converted most functions to Character Functions
Authentication working
Fixed data removal bug
Made some improvements to usercon
Fixed name bug
Merge pull request #32 from JeroenMathon/int_to_char

Successfully changed all uid integers to character array.