Add Previous and Next buttons to trailer GUI in options menu

Change "Uru Live Intro" button in Options menu to use localization

compiled/dat/OptionsMenuEnglish.loc

@@ -197,7 +197,7 @@ Look Around - Right Mouse Drag
 				<translation language="English">Ok</translation>
 			</element>
 			<element name="Prev">
-				<translation language="English">&lt;&lt; Previous</translation>
+				<translation language="English">&lt;&lt; Prev</translation>
 			</element>
 			<element name="QuitURU">
 				<translation language="English">Quit URU</translation>
@@ -215,7 +215,10 @@ Look Around - Right Mouse Drag
 				<translation language="English">URU Credits</translation>
 			</element>
 			<element name="URULive">
-				<translation language="English">Uru Live Intro</translation>
+				<translation language="English">Videos</translation>
+			</element>
+			<element name="Explore">
+				<translation language="English">Go Back</translation>
 			</element>
 		</set>
 		<set name="Messages">

compiled/dat/OptionsMenuFrench.loc

@@ -178,13 +178,13 @@ Regarder autour de soi - Clic droit maintenu enfoncé
 			<element name="Navigation">
 			</element>
 			<element name="Next">
-				<translation language="French">Suivant</translation>
+				<translation language="French">Suivant &gt;&gt;</translation>
 			</element>
 			<element name="Ok">
 				<translation language="French">Ok</translation>
 			</element>
 			<element name="Prev">
-				<translation language="French">Précédent</translation>
+				<translation language="French">&lt;&lt; Précédent</translation>
 			</element>
 			<element name="QuitURU">
 				<translation language="French">Quitter URU</translation>
@@ -201,7 +201,10 @@ Regarder autour de soi - Clic droit maintenu enfoncé
 				<translation language="French">Crédits URU</translation>
 			</element>
 			<element name="URULive">
-				<translation language="French">URU Live</translation>
+				<translation language="French">Vidéos</translation>
+			</element>
+			<element name="Explore">
+				<translation language="French">Retour</translation>
 			</element>
 		</set>
 		<set name="Messages">

compiled/dat/OptionsMenuGerman.loc

@@ -178,13 +178,13 @@ Umsehen - Maus bei gedrückter rechter Maustaste
 			<element name="Navigation">
 			</element>
 			<element name="Next">
-				<translation language="German">Weiter</translation>
+				<translation language="German">Nächstes &gt;&gt;</translation>
 			</element>
 			<element name="Ok">
 				<translation language="German">Ok</translation>
 			</element>
 			<element name="Prev">
-				<translation language="German">Zurück</translation>
+				<translation language="German">&lt;&lt; Vorheriges</translation>
 			</element>
 			<element name="QuitURU">
 				<translation language="German">URU verlassen</translation>
@@ -201,7 +201,10 @@ Umsehen - Maus bei gedrückter rechter Maustaste
 				<translation language="German">URU Credits</translation>
 			</element>
 			<element name="URULive">
-				<translation language="German">URU Live</translation>
+				<translation language="German">Videos</translation>
+			</element>
+			<element name="Explore">
+				<translation language="German">Optionen</translation>
 			</element>
 		</set>
 		<set name="Messages">

compiled/dat/OptionsMenuItalian.loc

@@ -201,7 +201,10 @@ Guardarsi intorno - Mouse destro + Trascinare
 				<translation language="Italian">Riconoscimenti di URU</translation>
 			</element>
 			<element name="URULive">
-				<translation language="Italian">URU Live</translation>
+				<translation language="Italian">Video</translation>
+			</element>
+			<element name="Explore">
+				<translation language="Italian">Alle Opzioni</translation>
 			</element>
 		</set>
 		<set name="Messages">

compiled/dat/OptionsMenuSpanish.loc

@@ -201,7 +201,10 @@ Mirar - Arrastrar pulsando el botón dcho. del Ratón
 				<translation language="Spanish">Créditos de URU</translation>
 			</element>
 			<element name="URULive">
-				<translation language="Spanish">URU Live</translation>
+				<translation language="Spanish">Vídeos</translation>
+			</element>
+			<element name="Explore">
+				<translation language="Spanish">Volver</translation>
 			</element>
 		</set>
 		<set name="Messages">