first attempt at responsive design
single-column css for handhelds; v_0_123

- Also adjustments to sponsor logo display: add vertical space between logos
- remove css comments
- change some css measurements to proportional/relative (from px to % or em)
- change from <ul><li> to <div> in sidebar and navbar
- remove <br /> from navbar menuitems
- Add note that venue is not wheelchair accessible
- change sizing for sponsor icons so ixsystems logo is bigger in sponsor list
fix clear: float -> clear: both; v_0_124
fix css for timeplace; v_0_125
fix for html validation; v_0_126
limit usergroup logo size; v_0_127
navbar:  All Ottawa Groups; v_0_128
admin usergroup filter
fix bronze sponsor logo bug; v_0_129
merge UserGroup and UserGroup2
v_0_130