* first functional implementation of RotationalMinctracc through the LSQ6 module
* design change to RotationalMinctracc:
  - setting the parameters is based on the resolution of the input files using factors.
  - only one level of blurring is used
* changes to the LSQ6 module:
  - added a new group to the input file to lsq6, to indicate it is not the 'base' anymore
  - added information about defaults to the lsq6 module options
  - added a flag to override the default factors and degrees that are used for rotational_minctracc
* bug fix in the getHighestResolution function