Bazel: Generate eclipse project

servlet_api_2_5 can be exculded from the generated .classpath to avoid
classpath collisions between Servlet API 2.5 and Servlet API 3.0. To do
that, pass -x parameter to project.py invocation in project.sh:

  ... -n gitiles -r . -x servlet_api_2_5

TEST PLAN:

  $ tools/eclipse/project.sh

Open the project in Eclipse IDE and verify that it can be compiled and
the tests can be run.

Change-Id: If318321fb1a94888a9adea635458afee2b463682

gitiles-dev/BUILD

diff --git a/gitiles-dev/BUILD b/gitiles-dev/BUILD
index 3a062c7..bbb6de2 100644
--- a/gitiles-dev/BUILD
+++ b/gitiles-dev/BUILD
@@ -13,6 +13,7 @@
         "//lib/slf4j:slf4j-simple",
         "//lib/soy",
     ],
+    visibility = ["//visibility:public"],
 )
 
 java_binary(