Shot hash should include base template and CSS too

Screenshots currently won't be regenerated if I change the base template or modify the CSS:

Lines 35 to 38 in c3d1cc4

    
           # The shot_hash incorporates a hash of all of row.html 
        
           row_html_hash = hashlib.md5( 
        
               (root / "templates" / "row.html").read_text().encode("utf-8") 
        
           ).hexdigest()

	# The shot_hash incorporates a hash of all of row.html
	row_html_hash = hashlib.md5(
	(root / "templates" / "row.html").read_text().encode("utf-8")
	).hexdigest()