adds translation to document type; brings back the date to the title material

numapde-exercise.cls

@@ -32,15 +32,11 @@
 
 % Configure the document class specific settings
 % Set document type
-\def\numapde@documenttype{Exercise}
+\def\numapde@documenttype{\GetTranslation{Exercise}}
 
 % Configure the problem counter
 \counterwithout{numapde@problem}{section}
 
-% Remove \@date and spacing following it from \@maketitle
-% https://tex.stackexchange.com/questions/288800/omit-the-date-in-maketitle-without-blanking-the-date
-\patchcmd{\@maketitle}{{\usekomafont{date}{\@date \par}}\vskip \z@ \@plus 1em}{}{}{}
-
 % Set up the page header and footer
 \addtokomafont{pageheadfoot}{\normalfont\sffamily\footnotesize}
 \date{\ISOToday}