Crop avatars to fixed size

Crop avatars to 128px * 128px in case some
larger avatars break the page layout.

Signed-off-by: Lance Chen <cyen0312@gmail.com>
Dynamically define chart size based on page width

Dynamically define chart size based on page width.
However, it is not yet responsive. A window resize
event is needed.

Signed-off-by: Lance Chen <cyen0312@gmail.com>
Construct dataService for serving data model

Construct dataService for serving data model
instead of hardcording in LegislatorListCtrl.

Signed-off-by: Lance Chen <cyen0312@gmail.com>
Make chart size responsive when resizing window

Signed-off-by: Lance Chen <cyen0312@gmail.com>