* moved .htaccess rules to plain php (index.php)

Its a salut to nginx and other web server nutzer (not apache), as they can now simply redirect all requests with simple rule to index.php, and php will take care of all redirects. .htaccess just now redirects everything to index.php with simple 3 lines.
* change accountmanagement links to use friendly_urls
* fixed creating new forum thread
* some fixes in account changecomment action
* show info when account name/number or password is empty on login
* fixed showing account login errors
* added new twig function getLink that convert link taking into account config.friendly_urls
* internalLayoutLink -> getLink

system/templates/account.create.html.twig

@@ -1,7 +1,7 @@
 To play on {{ config.lua.serverName }} you need an account.
 All you have to do to create your new account is to enter an account {% if constant('USE_ACCOUNT_NAME') %}name{% else %}number{% endif %}, password{% if config.recaptcha_enabled %}, confirm reCAPTCHA{% endif %}{% if config.account_country %}, country{% endif %} and your email address.
 Also you have to agree to the terms presented below. If you have done so, your account {% if constant('USE_ACCOUNT_NAME') %}name{% else %}number{% endif %} will be shown on the following page and your account password will be sent to your email address along with further instructions. If you do not receive the email with your password, please check your spam filter.<br/><br/>
-<form action="?subtopic=createaccount" method="post" id="createaccount">
+<form action="{{ getLink('account/create') }}" method="post" id="createaccount">
 	<div class="TableContainer" >
 		<table class="Table1" cellpadding="0" cellspacing="0" >
 			<div class="CaptionContainer" >
@@ -139,7 +139,11 @@ Also you have to agree to the terms presented below. If you have done so, your a
 							{% endif %}
 						</table>
 					</div>
-		</table></div></td></tr><br/>
+				</td>
+			</tr>
+		</table>
+	</div>
+	<br/>
 	<table width="100%">
 		<tr align="center">
 			<td>