Modified params to be compated as strings (#274)

Instead of comparing parameters from the conf and api directly
convert both to lowercase string to avoid type problems

Closes #273

jeeves/jobs.py

@@ -67,7 +67,7 @@ def get_jenkins_job_info(server, job_name, filter_param_name=None, filter_param_
 						break
 				if filter_param_name is not None:
 					api_param_value = [param['value'] for param in build_parameters if filter_param_name == param.get('name', '')][0]
-					if api_param_value == filter_param_value:
+					if str(api_param_value).lower() == str(filter_param_value).lower():
 						break
 				if build_info['previousBuild'] is None:
 					raise Exception("No filter match")