Fix broken Info.plist after copyright update

Fixes #15293.
+ misc fixes by @akien-mga.

(cherry picked from commit e3c9a7ed4f0b07a841e51b8bf2e92c370d21e33c)

editor/editor_node.cpp

@@ -6070,7 +6070,7 @@ EditorNode::EditorNode() {
 	about->add_child(vbc);
 	vbc->add_child(hbc);
 	Label *about_text = memnew(Label);
-	about_text->set_text(VERSION_FULL_NAME + String::utf8("\n\u00A9 2007-2018 Juan Linietsky, Ariel Manzur.\n\u00A9 2014-2017 ") + TTR("Godot Engine contributors") + "\n");
+	about_text->set_text(VERSION_FULL_NAME + String::utf8("\n\u00A9 2007-2018 Juan Linietsky, Ariel Manzur.\n\u00A9 2014-2018 ") + TTR("Godot Engine contributors") + "\n");
 	TextureFrame *logo = memnew(TextureFrame);
 	logo->set_texture(gui_base->get_icon("Logo", "EditorIcons"));
 	hbc->add_child(logo);

misc/dist/osx_tools.app/Contents/Info.plist

@@ -9,7 +9,7 @@
 	<key>CFBundleName</key>
 	<string>Godot</string>
 	<key>CFBundleGetInfoString</key>
-	<string>(c) 2007-2018 Juan Linietsky, Ariel Manzur./string>
+	<string>(c) 2007-2018 Juan Linietsky, Ariel Manzur.</string>
 	<key>CFBundleIconFile</key>
 	<string>Godot.icns</string>
 	<key>CFBundleIdentifier</key>
@@ -25,7 +25,7 @@
 	<key>CFBundleVersion</key>
 	<string>2.1.4</string>
 	<key>NSHumanReadableCopyright</key>
-	<string>© 2007-2018 Juan Linietsky, Ariel Manzur./string>
+	<string>© 2007-2018 Juan Linietsky, Ariel Manzur.</string>
 	<key>LSMinimumSystemVersion</key>
 	<string>10.9.0</string>
 	<key>LSMinimumSystemVersionByArchitecture</key>