* Justify the sequences to the left or right by deleting and inserting gaps before the initial residue or after the terminal residue
* @param right true if alignment padded to right, false to justify to left
* @return true if alignment was changed
* Justify the sequences to the left or right by deleting and inserting gaps before the initial residue or after the terminal residue
* @param right true if alignment padded to right, false to justify to left
* @return true if alignment was changed