[ios] Moved .stringsdict from Base.lproj to en.lproj

.stringsdict overrides need to be in real language .lprojs, not Base.lproj.

platform/ios/ios.xcodeproj/project.pbxproj

@@ -461,7 +461,7 @@
 		DABCABBF1CB80717000A7C39 /* locations.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = locations.cpp; sourceTree = "<group>"; };
 		DABCABC01CB80717000A7C39 /* locations.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = locations.hpp; sourceTree = "<group>"; };
 		DAC07C961CBB2CD6000CB309 /* mbgl.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = mbgl.xcconfig; path = ../../build/ios/mbgl.xcconfig; sourceTree = "<group>"; };
-		DAC49C5E1CD02BC9009E1AA3 /* Base */ = {isa = PBXFileReference; lastKnownFileType = text.plist.stringsdict; name = Base; path = Base.lproj/Localizable.stringsdict; sourceTree = "<group>"; };
+		DAC49C621CD07D74009E1AA3 /* en */ = {isa = PBXFileReference; lastKnownFileType = text.plist.stringsdict; name = en; path = en.lproj/Localizable.stringsdict; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -1399,7 +1399,7 @@
 		DAC49C5F1CD02BC9009E1AA3 /* Localizable.stringsdict */ = {
 			isa = PBXVariantGroup;
 			children = (
-				DAC49C5E1CD02BC9009E1AA3 /* Base */,
+				DAC49C621CD07D74009E1AA3 /* en */,
 			);
 			name = Localizable.stringsdict;
 			sourceTree = "<group>";