-Made editor support SSL certs by default (embedded them)

-Made asset sharing support https
-Many fixes to HTTPRequest
-Added an asset installer dialog
-Visual cleanups to asset sharing tab
-Fixed some issues in ScrollContainer, hope it does not break things
-Asset sharing tab is not visible (hidden on purpose) for now.

tools/editor/editor_node.cpp

@@ -107,7 +107,7 @@
 #include "tools/editor/io_plugins/editor_export_scene.h"
 
 #include "plugins/editor_preview_plugins.h"
-
+#include "editor_initialize_ssl.h"
 #include "script_editor_debugger.h"
 
 EditorNode *EditorNode::singleton=NULL;
@@ -4145,9 +4145,10 @@ Error EditorNode::export_platform(const String& p_platform, const String& p_path
 	return OK;
 }
 
-void EditorNode::show_warning(const String& p_text) {
+void EditorNode::show_warning(const String& p_text, const String &p_title) {
 
 	warning->set_text(p_text);
+	warning->set_title(p_title);
 	warning->popup_centered_minsize();
 }
 
@@ -4950,6 +4951,7 @@ EditorNode::EditorNode() {
 
 	EditorHelp::generate_doc(); //before any editor classes are crated
 	SceneState::set_disable_placeholders(true);
+	editor_initialize_certificates(); //for asset sharing
 
 
 	InputDefault *id = Input::get_singleton()->cast_to<InputDefault>();