Fix #15, long abstracts being forced onto new page

Now abstracts flow from the original page. 
Fix from: https://tex.stackexchange.com/q/500178/98351

source/latex/uosdocs/uosdocs.dtx

@@ -28,7 +28,7 @@
 \ProvidesFile{uosdocs.drv}
 %</driver>
 %<*thesis|minithesis|progress|project|report|article|gdp|gdpsummary|driver>
-              [2020/09/16 v1.1
+              [2020/09/16 v1.2
 %</thesis|minithesis|progress|project|report|article|gdp|gdpsummary|driver>
 %<thesis|minithesis|progress|project|report|article|gdp|gdpsummary>   LaTeX document class]
 %    \end{macrocode}
@@ -975,7 +975,8 @@
   \btypeout{Abstract Page}
   \thispagestyle{empty}
   \null\vfil
-  \begin{center}
+  \begingroup
+   \centering
     \setlength{\parskip}{0pt}
     {\textsc\normalsize \univname \par}
     \bigskip
@@ -1003,7 +1004,7 @@
     \medskip
     {\normalsize by \authornames \par}
     \bigskip
-  \end{center}
+  \endgroup
 }
 {
 %<*thesis|minithesis|progress|project|report>

tex/latex/uosdocs/uosarticle.cls

@@ -13,7 +13,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2007/02/26]
 \ProvidesClass{uosarticle}
-              [2020/09/16 v1.1
+              [2020/09/16 v1.2
    LaTeX document class]
 %% ------------ Class/Formating Adjustment ----------------------
 %% Adjust the book class to match the requirements

tex/latex/uosdocs/uosgdp.cls

@@ -13,7 +13,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2007/02/26]
 \ProvidesClass{uosgdp}
-              [2020/09/16 v1.1
+              [2020/09/16 v1.2
    LaTeX document class]
 %% ------------ Class/Formating Adjustment ----------------------
 %% Adjust the book class to match the requirements
@@ -257,7 +257,8 @@
   \btypeout{Abstract Page}
   \thispagestyle{empty}
   \null\vfil
-  \begin{center}
+  \begingroup
+   \centering
     \setlength{\parskip}{0pt}
     {\textsc\normalsize \univname \par}
     \bigskip
@@ -268,7 +269,7 @@
     \medskip
     {\normalsize by \authornames \par}
     \bigskip
-  \end{center}
+  \endgroup
 }
 {
 }

tex/latex/uosdocs/uosgdpsummary.cls

@@ -13,7 +13,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2007/02/26]
 \ProvidesClass{uosgdpsummary}
-              [2020/09/16 v1.1
+              [2020/09/16 v1.2
    LaTeX document class]
 %% ------------ Class/Formating Adjustment ----------------------
 %% Adjust the book class to match the requirements

tex/latex/uosdocs/uosminithesis.cls

@@ -13,7 +13,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2007/02/26]
 \ProvidesClass{uosminithesis}
-              [2020/09/16 v1.1
+              [2020/09/16 v1.2
    LaTeX document class]
 %% ------------ Class/Formating Adjustment ----------------------
 %% Adjust the book class to match the requirements
@@ -260,7 +260,8 @@
   \btypeout{Abstract Page}
   \thispagestyle{empty}
   \null\vfil
-  \begin{center}
+  \begingroup
+   \centering
     \setlength{\parskip}{0pt}
     {\textsc\normalsize \univname \par}
     \bigskip
@@ -275,7 +276,7 @@
     \medskip
     {\normalsize by \authornames \par}
     \bigskip
-  \end{center}
+  \endgroup
 }
 {
   \vfil\vfil\vfil\null

tex/latex/uosdocs/uosprogress.cls

@@ -13,7 +13,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2007/02/26]
 \ProvidesClass{uosprogress}
-              [2020/09/16 v1.1
+              [2020/09/16 v1.2
    LaTeX document class]
 %% ------------ Class/Formating Adjustment ----------------------
 %% Adjust the book class to match the requirements
@@ -260,7 +260,8 @@
   \btypeout{Abstract Page}
   \thispagestyle{empty}
   \null\vfil
-  \begin{center}
+  \begingroup
+   \centering
     \setlength{\parskip}{0pt}
     {\textsc\normalsize \univname \par}
     \bigskip
@@ -275,7 +276,7 @@
     \medskip
     {\normalsize by \authornames \par}
     \bigskip
-  \end{center}
+  \endgroup
 }
 {
   \vfil\vfil\vfil\null

tex/latex/uosdocs/uosproject.cls

@@ -13,7 +13,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2007/02/26]
 \ProvidesClass{uosproject}
-              [2020/09/16 v1.1
+              [2020/09/16 v1.2
    LaTeX document class]
 %% ------------ Class/Formating Adjustment ----------------------
 %% Adjust the book class to match the requirements
@@ -260,7 +260,8 @@
   \btypeout{Abstract Page}
   \thispagestyle{empty}
   \null\vfil
-  \begin{center}
+  \begingroup
+   \centering
     \setlength{\parskip}{0pt}
     {\textsc\normalsize \univname \par}
     \bigskip
@@ -275,7 +276,7 @@
     \medskip
     {\normalsize by \authornames \par}
     \bigskip
-  \end{center}
+  \endgroup
 }
 {
   \vfil\vfil\vfil\null

tex/latex/uosdocs/uosreport.cls

@@ -13,7 +13,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2007/02/26]
 \ProvidesClass{uosreport}
-              [2020/09/16 v1.1
+              [2020/09/16 v1.2
    LaTeX document class]
 %% ------------ Class/Formating Adjustment ----------------------
 %% Adjust the book class to match the requirements
@@ -271,7 +271,8 @@
   \btypeout{Abstract Page}
   \thispagestyle{empty}
   \null\vfil
-  \begin{center}
+  \begingroup
+   \centering
     \setlength{\parskip}{0pt}
     {\textsc\normalsize \univname \par}
     \bigskip
@@ -285,7 +286,7 @@
     \medskip
     {\normalsize by \authornames \par}
     \bigskip
-  \end{center}
+  \endgroup
 }
 {
   \vfil\vfil\vfil\null

tex/latex/uosdocs/uosthesis.cls

@@ -13,7 +13,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2007/02/26]
 \ProvidesClass{uosthesis}
-              [2020/09/16 v1.1
+              [2020/09/16 v1.2
    LaTeX document class]
 %% ------------ Class/Formating Adjustment ----------------------
 %% Adjust the book class to match the requirements
@@ -276,7 +276,8 @@
   \btypeout{Abstract Page}
   \thispagestyle{empty}
   \null\vfil
-  \begin{center}
+  \begingroup
+   \centering
     \setlength{\parskip}{0pt}
     {\textsc\normalsize \univname \par}
     \bigskip
@@ -291,7 +292,7 @@
     \medskip
     {\normalsize by \authornames \par}
     \bigskip
-  \end{center}
+  \endgroup
 }
 {
   \vfil\vfil\vfil\null