Fixed formatting of JSON output in the API.

Grr.. my host (bluehost.com) switched PHP versions, rolling back from 5.2.1 to 5.1.6. This broke one of the main scripts which runs the site (specifically the json_decode function which was introduced in PHP v5.2). This reallly helped me out, everything is back up now.

Added JSON output option to API calls - simply add a "&output=json" to the query and the output will be formatted in JSON.

Added three new APIs: getall_reps_bystate.php, getall_sens_byname.php, getall_sens_byname.php.

Added option to view images for congressional districts. The images themselves come from http://nationalatlas.gov and consistent with this site, are in the public domain. All maps are current as of the 109th congress.

Added party information to representative lookup. Data is current as of the new 110th congress.

We are live!