Switch to useing markdown for user formatted text

www/admin/prosjekter/edit.php

@@ -87,7 +87,7 @@ foreach($members as $i => $data){
 				<p class="subtitle">Tittel</p>
 				<?= '<input type="text" name="title" value="' . $project->getName() . '" class="boxinput">' ?><br>
 
-				<p class="subtitle">Beskrivelse</p>
+				<p class="subtitle">Beskrivelse (<i>markdown</i>)</p>
 				<textarea name="desc" cols="40" rows="5" class="boxinput"><?= implode($project->getDescription(), "\n"); ?></textarea>
 			</div>
 
@@ -140,4 +140,4 @@ foreach($members as $i => $data){
 		</form>
 		<p>
 	</main>
-</body>
+</body>