modifying gclip polygons and points function for use in the assessment

adding function to plot residuals by stations to product assessment part 1 function script

running combining function and time series plotting for 11 selected stations for env layers meeting

testing ploting time series profile function and clean up of main code for product assessment part1

modifying time series ploting function with additional option

debugging ploting time series function and moving it to the function script

starting new function +plot_observation_predictions_time_series

plotting extracted predicted values and measured tmax

testing function combine extraction and assessment data, also moved to function script

removing code related to time series and combine extracted and stations information from assessment