Calculate private project ratings

[gondzo]

Before running the code, create the new tables in the db

CREATE TABLE group_project_result (
    user_id DECIMAL(10,0),
    project_id DECIMAL(10,0),
    group_id DECIMAL(10,0),
    old_rating DECIMAL(5,0),
    new_rating DECIMAL(5,0),
    rating_ind DECIMAL(1,0),
    create_date DATETIME YEAR TO FRACTION(3) DEFAULT CURRENT,
    modify_date DATETIME YEAR TO FRACTION(3) DEFAULT CURRENT,
    rating_order INTEGER,
    PRIMARY KEY (user_id, project_id, group_id) 
    CONSTRAINT group_project_result_pkey);


CREATE TABLE group_user_rating (
    user_id DECIMAL(10,0) NOT NULL, 
    group_id DECIMAL(10,0) NOT NULL,
    rating DECIMAL(10,5) DEFAULT 0 NOT NULL, 
    phase_id DECIMAL(3,0) NOT NULL, 
    vol DECIMAL(10,5) DEFAULT 0 NOT NULL, 
    rating_no_vol DECIMAL(10,5) DEFAULT 0 NOT NULL, 
    num_ratings DECIMAL(5,0) DEFAULT 0 NOT NULL, 
    mod_date_time DATETIME YEAR TO FRACTION(3) DEFAULT CURRENT, 
    create_date_time DATETIME YEAR TO FRACTION(3) DEFAULT CURRENT, 
    last_rated_project_id DECIMAL(12,0), 
    PRIMARY KEY (user_id, phase_id, group_id) 
    CONSTRAINT pk_group_user_rating);

@RishiRajSahu let me know if any changes are needed

[RishiRajSahu]

@gondzo merging it to feature so that I can take a pull and run locally, hence forth lets do the changes if required to feature.