fractest.cpp - change default parameters and add comments

Trying also to limit the number of repeat operators. The app is
hanging now, probably after exhausting the uniqu pairs list in
RandOp. Need to investigate, but want to commit what I have for
now.
fractest.h - need to explicitly include QPushButton
fractest.cpp - begin to integrate RandManager
ftnamespace.h - add a third pushbutton to set defaults

Has no functionality yet. Just a placeholder and reminder for now.
fractest.cpp: incremental progress in getMaxops()
fractest.cpp - more integration with RandManager and its implications
fractest.cpp - integration of randmanager continues
default.mt - deleted, program output file, not source
fractest.*: extensive changes to integrate randmanager

At this stage, the app will build, but it crashes when executed.
fractest.cpp: RandManager has been fully integrated.

TODO: 1. Add the "Combine Fractions" test
      2. Add the "Defaults" dialog
Tagged at v0.8