store the total amount of achievable XPs for a Questgroup in the database instead of calculating it every time (Issue #281)

questtypes/textinput/html/quest.tpl

@@ -0,0 +1,11 @@
+<form method="post" class="textinput">
+	<p>
+	<?php foreach($texts as $i => &$text) : ?>
+	<?php if($i > 0) : ?>
+	<input type="text" name="answers[<?=$i-1?>]" value="<?=$regexs[$i-1]['answer']?>" />
+	<?php endif ?>
+	<?=$t->t($text)?>
+	<?php endforeach ?>
+	</p>
+	<input type="submit" name="submit" value="<?=_('solve')?>" />
+</form>

questtypes/textinput/html/submission.tpl

@@ -0,0 +1,7 @@
+<?php foreach($texts as $i => &$text) : ?>
+<?php if($i > 0) : ?>
+<span style="background-color:grey"><?=$regexs[$i-1]['answer']?></span>
+<?php if($regexs[$i-1]['right']) : ?>✓<?php else: ?>✕<?php endif ?>
+<?php endif ?>
+<?=$t->t($text)?>
+<?php endforeach ?>