Explicitly set sort order for sources, contributors, and toc entries

This is just to avoid any future undefined behavior. The current DB table implementation returns these rows in insertion order, but it might not be wise to depend on that. Either way, the result sets of these queries are small and can be sorted quickly.

lib/Ebook.php

@@ -193,6 +193,7 @@ class Ebook{
 						SELECT *
 						from EbookSources
 						where EbookId = ?
+						order by EbookSourceId
 					', [$this->EbookId], EbookSource::class);
 		}
 
@@ -209,6 +210,7 @@ class Ebook{
 						from Contributors
 						where EbookId = ?
 							and MarcRole = ?
+						order by ContributorId
 					', [$this->EbookId, 'aut'], Contributor::class);
 		}
 
@@ -225,6 +227,7 @@ class Ebook{
 							from Contributors
 							where EbookId = ?
 								and MarcRole = ?
+							order by ContributorId
 						', [$this->EbookId, 'ill'], Contributor::class);
 		}
 
@@ -241,6 +244,7 @@ class Ebook{
 							from Contributors
 							where EbookId = ?
 								and MarcRole = ?
+							order by ContributorId
 						', [$this->EbookId, 'trl'], Contributor::class);
 		}
 
@@ -257,6 +261,7 @@ class Ebook{
 							from Contributors
 							where EbookId = ?
 								and MarcRole = ?
+							order by ContributorId
 						', [$this->EbookId, 'ctb'], Contributor::class);
 		}
 
@@ -274,6 +279,7 @@ class Ebook{
 					SELECT *
 					from TocEntries
 					where EbookId = ?
+					order by TocEntryId
 				', [$this->EbookId], stdClass::class);
 
 			foreach($result as $row){