UI improvements, bug fixes and code cleaning and commenting.
(1) Solve a bug with "french" labels option in hydrograph
(2) Changed the default project location in WHATPref class to cwd + /Projects/Example
(3) UI Memory Variables for location in “hydrograph Tab” now resets to the projets folder when a new projetc is chosen.
(4) First time startup should now open correctly in Example folder.
(5) When concatenating raw downloaded data, total number of missing values should now be calculated and displayed correctly.
(6) Cleaned the HTML code in function “concatenate” in WHAT.py