changes made to jsons to add replace assitanceScore with assistanceScore. There was a s missing
Functionalities added :
	table with multiple queries using modules - custom query structure can be checked with the example
	cpiLeader table code merged to remove the redundancy.
	modules moved out to modules.json. this acts like a db file for all types of tables available. the parameter values will define how and what shows up.
Merge branch 'master' into sachin
error ratio updated as per the cpi leader board values
added assistance score and made sure for completed node shows assistance score of 1
slides functions added to logging object. code tested