New title page formatting and changes to date formatter

Title page formatting changes

• Title is now centered (relative to margins)
• The horizontal lines above and under the title are removed as they are not in the "official" template
• TurnItIn info is centered (relative to margins)
• The thesis information on title page is now aligned to right
• Title page contains month name (fixes #12 )
• Fixes "underful hbox" warnings from the title page

Changes to date formatting

• The custom month localization macro (\monthname) utilizing DTMmonthname syntax has been replaced with DTMMonthname macro, which should respect the current locale

Screenshot of the title page produced by this class:

latex/utuftthesis.cls

@@ -246,11 +246,9 @@
 
 \RequirePackage{fvextra}                % minted
 \RequirePackage{csquotes}               % quotations
-
-\langfin{
-  \RequirePackage[fi,en-US]{datetime2}        % month names
-}{
-  \RequirePackage[en-US,fi]{datetime2}        % month names
+% Datetime must be loaded after babel/polyglossia but the DTMsave must be called early enough
+\AtEndPreamble{
+    \RequirePackage[useregional, calc]{datetime2}
 }
 
 
@@ -312,8 +310,9 @@
 %% @see http://ftp.acc.umu.se/mirror/CTAN/macros/latex/contrib/datetime2/datetime2.pdf
 %% note: for some languages (en), need to provide a macro such as
 %%   DTM<language>Monthname -> DTM<language>monthname
-\newcommand{\DTMenglishMonthname}[1]{\DTMenglishmonthname{#1}}
-\newcommand{\monthname}[1]{\csname DTM#1Monthname\endcsname}
+% Lines below were commented out as DTMMonthname macro should work as good
+%\newcommand{\DTMenglishMonthname}[1]{\DTMenglishmonthname{#1}}
+%\newcommand{\monthname}[1]{\csname DTM#1Monthname\endcsname}
 
 %% -- end of localization --
 
@@ -457,27 +456,27 @@
   \vspace*{\stretch{1}}
   \vspace{3mm}
   \noindent 
-  \rule{\linewidth}{1 mm}
   \renewcommand{\baselinestretch}{1.05}\normalsize
-  \begin{flushright}
+  \begin{center}
   \Huge{\@title}
-  \end{flushright}
-  \rule{\linewidth}{1 mm}
+  \end{center}
   \vspace*{\stretch{4}}
 
   \renewcommand{\baselinestretch}{1}\normalsize
   \begin{adjustbox}{minipage=65mm,right}
-  \thesistype{\l@nguage}\\
-  \university{\l@nguage}\\
-  \department{\l@nguage}\\
-  \labname{\l@nguage}\\
-  \ye@r\\
-  \@author
-  \ifdefstring{\s@pervisors}{none}{}{\\
-    \\
-    \supervisorstext:
-    \expandafter\forcsvlist\expandafter\\\expandafter{\s@pervisors}
+    \begin{flushright}
+        \textsc{\university{\l@nguage}}\\
+        \department{\l@nguage}\\
+        \thesistype{\l@nguage}\\
+        \labname{\l@nguage}\\
+        \DTMMonthname{\m@nth} \ye@r \\
+        \@author{}%
+        \ifdefstring{\s@pervisors}{none}{}{\break
+          \\
+          \supervisorstext:
+          \expandafter\forcsvlist\expandafter\\\expandafter{\s@pervisors}
   }
+    \end{flushright}
   \end{adjustbox}
   \vspace*{\stretch{1}}%
   \ifutuftthesis@turnitinchecked
@@ -486,9 +485,9 @@
       \thispagestyle{empty}
       \vspace*{\stretch{1}}
     \else
-      \\
+      \par
     \fi
-    \scriptsize \noindent{\turnitin}
+    \scriptsize \begin{center} \noindent{\turnitin} \end{center}
   \fi
   
   \end{titlepage}
@@ -517,9 +516,10 @@
   \thesistype{#1}, %
   \pagecounttext{#1} \\
   \labname{#1} \\
-  \monthname{#1}{\m@nth} \ye@r\\
+  \DTMMonthname{\m@nth} \ye@r\\
   \rule{\linewidth}{1 pt}%
   \setlength{\parindent}{0em}%
+  \setlength{\parskip}{1em}%
   \\
 }