Enable i18n tests in rake test command

LMS-1963

rakelib/i18n.rake

@@ -62,7 +62,7 @@ namespace :i18n do
   end
 
   desc "Run tests for the internationalization library"
-  task :test => "i18n:validate:gettext" do
+  task :test => ["i18n:validate:gettext", "i18n:extract", "i18n:generate"] do
     test = File.join(REPO_ROOT, "i18n", "tests")
     pythonpath_prefix = "PYTHONPATH=#{REPO_ROOT}/i18n:$PYTHONPATH"
     sh("#{pythonpath_prefix} nosetests #{test}")

rakelib/tests.rake

@@ -136,7 +136,7 @@ namespace :test do
 end
 
 desc "Run all tests"
-task :test, [:test_id] => [:test_docs, 'test:python']
+task :test, [:test_id] => [:test_docs, 'test:python', 'i18n:test']
 
 desc "Build the html, xml, and diff coverage reports"
 task :coverage => :report_dirs do