upgrade module codes
add sem 1 and sem 2 merged module codes

to use merge.js needs to change codes.js from define to exports.codes
use segoe ui font for slots
slots with no alter slots will not be draggable
differentiate clashing exam modules on display
initial print media css

not in use yet
version update 0.3.0 -> 0.3.3
fix add input enter bug
improve clash add and remove
fix ie8 drag helper not removed bug
improve slot click event handling
fix section class drag and hover bug

when on section class drag, hover on the alter class will highlight all
classes + droppable classes
temp update on welcome messages
modules codes + merged update
add welcome message
add specific term control btns
separate fetch to crawler api
support sortable module list
minor changes on styling
temp update on tests