Require same logarithm be used for numerator and denominator of answer.
Merge branch 'master' of github.com:openwebwork/webwork-open-problem-library
Move two sentences from qa() to precede the ColumnTable.
This allows the figure to be closer to the MC items.

Paul: this might be a way to cope with the squeezing I described in a bugzilla
report about Library/LoyolaChicago/Precalc/Chap6Sec2/Q30.pg
Merge pull request #34 from Dick-Lane/master

Require same logarithm be used for numerator and denominator of answer.