Merge branch 'stable-2.15'

* stable-2.15:
  Fix typo in README.md
  SAML providers: put proper links to SAML providers config
  Documentation: move build instructions into README
  SamlWebFilter: Fix AnonymousHttpRequest.getHeaderNames method

Change-Id: I99f0c1df34a88a83f89241b42b53c7f57d2ee09f

BUILD

diff --git a/BUILD b/BUILD
index 7786b50..fce601b 100644
--- a/BUILD
+++ b/BUILD
@@ -8,7 +8,9 @@
     ],
     resources = glob(["src/main/resources/**"]),
     deps = [
+        "@commons-collections//jar",
         "@cryptacular//jar",
+        "@joda-time//jar",
         "@opensaml-core//jar",
         "@opensaml-messaging-api//jar",
         "@opensaml-messaging-impl//jar",
@@ -30,6 +32,7 @@
         "@shibboleth-xmlsectool//jar",
         "@spring-core//jar",
         "@stax2-api//jar",
+        "@velocity//jar",
         "@woodstox-core//jar",
     ],
 )

external_plugin_deps.bzl

diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index 7909bbe..6d84606 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -7,6 +7,13 @@
 PAC4J_VERSION = "3.5.0"
 
 def external_plugin_deps():
+    # Transitive dependency of velocity
+    maven_jar(
+        name = "commons-collections",
+        artifact = "commons-collections:commons-collections:3.2.2",
+        sha1 = "8ad72fe39fa8c91eaaf12aadb21e0c3661fe26d5",
+    )
+
     maven_jar(
         name = "cryptacular",
         artifact = "org.cryptacular:cryptacular:1.2.1",
@@ -14,6 +21,12 @@
     )
 
     maven_jar(
+        name = "joda-time",
+        artifact = "joda-time:joda-time:2.9.9",
+        sha1 = "f7b520c458572890807d143670c9b24f4de90897",
+    )
+
+    maven_jar(
         name = "opensaml-core",
         artifact = "org.opensaml:opensaml-core:" + OPENSAML_VERSION,
         sha1 = "a1a4607c800bebd921615ef6fdb7bcd1340452c3",
@@ -156,6 +169,12 @@
     )
 
     maven_jar(
+        name = "velocity",
+        artifact = "org.apache.velocity:velocity:1.7",
+        sha1 = "2ceb567b8f3f21118ecdec129fe1271dbc09aa7a",
+    )
+
+    maven_jar(
         name = "woodstox-core",
         artifact = "com.fasterxml.woodstox:woodstox-core:5.0.3",
         sha1 = "10aa199207fda142eff01cd61c69244877d71770",