Switch to using bootstrap alerts for problem messages.

Dispense with the ResultsWithError and ResultsWithoutError classes, and
instead use bootstrap alerts with the alert-danger and alert-sucess
classes.

Also remove the unused `$pg{options}{correct_answer}` and
`$pg{options}{incorrect_answer}` variables from defaults.config.

conf/defaults.config

@@ -1045,12 +1045,6 @@ $pg{options}{showEvaluatedAnswers}      = 1;
 # propogate to the main process.  So this really should never be set to 0.
 $pg{options}{catchWarnings}      = 1;
 
-# decorations for correct input blanks -- apparently you can't define and name attribute collections in a .css file
-$pg{options}{correct_answer} = "{border-width:2;border-style:solid;border-color:#8F8}"; #matches resultsWithOutError class in math2.css
-
-# decorations for incorrect input blanks
-$pg{options}{incorrect_answer} = "{border-width:2;border-style:solid;border-color:#F55}"; #matches resultsWithError class in math2.css
-
 ##### Settings for various display modes
 
 # "images" mode has several settings:

lib/WeBWorK/ContentGenerator/Problem.pm

@@ -1469,7 +1469,7 @@ sub output_summary ($c) {
 			@$output,
 			$c->tag(
 				'div',
-				class => 'ResultsWithError d-inline-block mb-2',
+				class => 'alert alert-danger d-inline-block mb-2 p-1',
 				$c->maketext('ANSWERS ONLY CHECKED -- ANSWERS NOT RECORDED')
 			),
 			$c->attemptResults($pg)
@@ -1479,7 +1479,7 @@ sub output_summary ($c) {
 			@$output,
 			$c->tag(
 				'div',
-				class => 'ResultsWithError d-inline-block mb-2',
+				class => 'alert alert-danger d-inline-block mb-2 p-1',
 				$c->maketext('PREVIEW ONLY -- ANSWERS NOT RECORDED')
 			),
 		);
@@ -1489,7 +1489,7 @@ sub output_summary ($c) {
 		@$output,
 		$c->tag(
 			'div',
-			class => 'ResultsWithError d-inline-block mb-2',
+			class => 'alert alert-danger d-inline-block mb-2 p-1',
 			$c->maketext(
 				'ATTEMPT NOT ACCEPTED -- Please submit answers again (or request new version if neccessary).')
 		)

templates/ContentGenerator/GatewayQuiz.html.ep

@@ -115,17 +115,17 @@
 % my $numProbPerPage = $c->{set}->problems_per_page;
 %
 % if ($c->{will}{recordAnswers}) {
-	% my $divClass = 'ResultsWithoutError';
+	% my $divClass = 'alert-success';
 	% my $recdMsg  = '';
 	% for (@{ $c->{scoreRecordedMessage} }) {
 		% if ($_ ne 'recorded') {
 			% $recdMsg  = $_;
-			% $divClass = 'ResultsWithError';
+			% $divClass = 'alert-danger';
 			% last;
 		% }
 	% }
 	%
-	<div class="<%= $divClass . ' mb-3' %>">
+	<div class="<%= "alert $divClass mb-3 p-1" %>">
 		% # A handy noun for when referring to a test.
 		% my $testNoun = ($c->{set}->attempts_per_version || 0) > 1 ? maketext('submission') : maketext('test');
 		% my $testNounNum =
@@ -256,11 +256,11 @@
 	% }
 	%
 	% if ($timeLeft < 60 && $timeLeft > 0 && !$authz->hasPermissions($userID, 'record_answers_when_acting_as_student')) {
-		<div class="ResultsWithError d-inline-block mb-2">
+		<div class="alert alert-danger d-inline-block mb-2 p-1">
 			<strong><%= maketext('You have less than 1 minute to complete this test.') %></strong>
 		</div>
 	% } elsif ($timeLeft <= 0 && !$authz->hasPermissions($userID, 'record_answers_when_acting_as_student')) {
-		<div class="ResultsWithError d-inline-block mb-2">
+		<div class="alert alert-danger d-inline-block mb-2 p-1">
 			<strong>
 				<%= maketext('You are out of time!')
 					. (
@@ -499,19 +499,19 @@
 				%
 				% if ($c->{submitAnswers}) {
 					% if ($c->{scoreRecordedMessage}[ $probOrder->[$i] ] ne 'recorded') {
-						% $recordMessage = tag('div', class => 'ResultsWithError d-inline-block mb-2',
+						% $recordMessage = tag('div', class => 'alert alert-dangeer d-inline-block mb-2 p-1',
 							% maketext('ANSWERS NOT RECORDED -- [_1]', $c->{scoreRecordedMessage}[ $probOrder->[$i] ])
 						% );
 					% }
 					% $resultsTable = $c->attemptResults($pg);
 				% } elsif ($c->{will}{checkAnswers} || $c->{will}{showProblemGrader}) {
-					% $recordMessage = tag('div', class => 'ResultsWithError d-inline-block mb-2',
+					% $recordMessage = tag('div', class => 'alert alert-danger d-inline-block mb-2 p-1',
 						% maketext('ANSWERS ONLY CHECKED -- ANSWERS NOT RECORDED')
 					% );
 					%
 					% $resultsTable = $c->attemptResults($pg);
 				% } elsif ($c->{previewAnswers}) {
-					% $recordMessage = tag('div', class => 'ResultsWithError d-inline-block mb-2',
+					% $recordMessage = tag('div', class => 'alert alert-danger d-inline-block mb-2 p-1',
 						% maketext('PREVIEW ONLY -- ANSWERS NOT RECORDED')
 					% );
 				% }