Class meets on Tuesday/Thursday in Fall 2014.

Uses "T/H" to clarify that it refers to two days of the week, and
further clears up room locations and times of day.  Also fixes a few
syllabus dates for Fall 2014.
Moves homework-answers/ to homework-solutions/.

Since homework-solutions/ comes lexically after homework-questions/,
this prevents the solutions from appearing before the questions in a
given commit, such as 759ebe65f8d6c2510ce9346e9eb876d3d8559a49.
Merge pull request #6 from timparenti/L02-fixes

L02 fixes