Replaced utf8x package by just utf8
Replaced utf8x package by just utf8

rtfpessoa/ist-dissertation-latex-template,samfcmc/ist-dissertation-latex-template,mrfyda/ist-dissertation-latex-template,mrfyda/ist-dissertation-latex-template,rtfpessoa/ist-dissertation-latex-template,samfcmc/ist-dissertation-latex-template