improve frontend of emacs, ckeditor, tinymce, nicedit, meta and env functions

Improves in emacs:
- use htmx to send content to the controller
- show txt and formatted_txt content in the second panel
- show two tabs if "tabs" winix parameter is used
- add an option to show either one or two panels
- correctly resize the editor window (F11) when two panels are shown

Improves in ckeditor:
- use htmx to send content to the controller
- do not check automatically for ckeditor update

Improves in tinymce/nicedit/meta/env:
- use htmx to send content to the controller

while here:
- change PascalCase to snake_case in meta/env controllers
- update CodeMirror editor to 5.65.16
- udpate Showdown (markdown to html converter) to 2.1.0

winixd/templates/misc.cpp

@@ -51,34 +51,34 @@ extern Ezc::Vars         ezc_vars;
 void HtmlEscapeFormTxt(HtmlTextStream & out, const std::wstring & in)
 {
 std::wstring::const_iterator i;
-int was_enter = 0; // how many enteres there were before
+int was_nl = 0; // how many new line characters there were before
 
 	if( in.empty() )
 		return;
 
-	out << R("<p>"); // !! pozbyc sie wstawianie tego html tutaj (wrzucic w jakis sposob do szablonow)
+	out << R("<p>");
 
 	// skipping first new line characters
 	for(i = in.begin() ; i != in.end() && (*i==13 || *i==10) ; ++i);
 
 	for( ; i != in.end() ; ++i )
 	{
-		if( *i == 13 ) // skipping stupid characters (\r\n\ in dos mode)
+		if( *i == 13 )
 			continue;
 
 		if( *i == 10 )
 		{
-			++was_enter;
+			++was_nl;
 		}
 		else
 		{
-			if( was_enter == 1 )
+			if( was_nl == 1 )
 				out << R("<br>\n");
 			else
-			if( was_enter > 1 )
+			if( was_nl > 1 )
 				out << R("</p>\n<p>");
 
-			was_enter = 0;
+			was_nl = 0;
 		}
 
 		out << *i;