Improve code layout.

Author: alexander-yevsyukov

client/src/main/proto/spine/validate.proto

@@ -19,7 +19,7 @@
 //
 syntax = "proto3";
 
-// We do not define the package for this file to allow shorter options for user-defined types.
+// We do not define a package for this file to allow shorter options for user-defined types.
 // This would allow to write:
 //
 //     [(required).value = true];
@@ -37,6 +37,7 @@ option java_package = "org.spine3.validate.internal";
 option (internal_all) = true;
 
 import "google/protobuf/descriptor.proto";
+
 import "spine/annotations.proto";
 
 // TODO:2016-02-18:alexander.litus: obtain globally unique field number(s) for opts from Google.

server/src/main/proto/spine/server/storage/event_storage.proto

@@ -30,6 +30,7 @@ option (SPI_all) = true;
 
 import "google/protobuf/any.proto";
 import "google/protobuf/timestamp.proto";
+
 import "spine/base/event.proto";
 import "spine/annotations.proto";