Remove use of notTransitive

SBT's notTransitive declaration is ignored when generating a pom.xml
(see sbt/sbt#2276), which, since we publish
maven style, means it has no effect outside of the Play project itself.

Instead, it must be replaced with individual exclusions.  In particular,
the findbugs annotations dependency from reflections must be excluded,
because it's LGPL, which prevents Play users from distributing a Play
application under their own license.

framework/project/Dependencies.scala

@@ -67,22 +67,22 @@ object Dependencies {
     // This is depended on by hibernate validator, we upgrade to 3.2.0 to avoid LGPL license of 3.1.x
     "org.jboss.logging" % "jboss-logging" % "3.2.1.Final",
 
-    ("org.springframework" % "spring-context" % springFrameworkVersion notTransitive ())
+    ("org.springframework" % "spring-context" % springFrameworkVersion)
       .exclude("org.springframework", "spring-aop")
       .exclude("org.springframework", "spring-beans")
       .exclude("org.springframework", "spring-core")
       .exclude("org.springframework", "spring-expression")
       .exclude("org.springframework", "spring-asm"),
 
-    ("org.springframework" % "spring-core" % springFrameworkVersion notTransitive ())
+    ("org.springframework" % "spring-core" % springFrameworkVersion)
       .exclude("org.springframework", "spring-asm")
       .exclude("commons-logging", "commons-logging"),
 
-    ("org.springframework" % "spring-beans" % springFrameworkVersion notTransitive ())
+    ("org.springframework" % "spring-beans" % springFrameworkVersion)
       .exclude("org.springframework", "spring-core"),
 
-    ("org.reflections" % "reflections" % "0.9.9" notTransitive ())
-      .exclude("javassist", "javassist"),
+    ("org.reflections" % "reflections" % "0.9.9")
+      .exclude("com.google.code.findbugs", "annotations"),
 
     // Used by the Java routing DSL
     "net.jodah" % "typetools" % "0.4.3",