revise o.1.1 to o.1 per Matt
o.1.1 to o.1, style button label size in ordops simple
o.1 through 37; app.css color on hr in instruction box; ms-order-operations-simple.js, correct distinction of exponent or multiplied terms for spacing
o.1 thru 40, add bracket to enlarge-ops.js, css to make td's on buttons and fake buttons uniform height
move ms-order-operations.simple css out of ms-button.css; modify ms-order-operations-simple for spacing and use of \\str; comment enlarge-ops on left bracket
4.2, 11.1, n.1, o.1 switch / in for &divide; or \xF7, switch * in for &bull; ms-order-operations-simple using \\str which uses enlarge.ops
cleanup 4.2 & 11.1, modifications to ms-order-operations-simple.js to account for styling differences between operators, ms-order-operations-simple.css min-width for butons
n.1 & o.1, check for ms-order-operations-simple revisions- o.1, change problems 21 & 22 per Matt