Tidy up Gemfile.

git-svn-id: http://svn.redmine.org/redmine/trunk@17853 e93f8b46-1217-0410-a6f0-8f06a7374b81

Gemfile

@@ -11,13 +11,12 @@ gem "roadie-rails", "~> 1.3.0"
 gem "mimemagic"
 gem "mail", "~> 2.7.1"
 gem "csv", "~> 3.0.1" if RUBY_VERSION >= "2.3" && RUBY_VERSION < "2.6"
-
 gem "nokogiri", (RUBY_VERSION >= "2.3" ? "~> 1.10.0" : "~> 1.9.1")
 gem "i18n", "~> 0.7.0"
+gem "rbpdf", "~> 1.19.6"
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 gem 'tzinfo-data', platforms: [:mingw, :x64_mingw, :mswin]
-gem "rbpdf", "~> 1.19.6"
 
 # Optional gem for LDAP authentication
 group :ldap do