Merge branch '3.1-stable' into develop

Conflicts resolved:
	system/core/CodeIgniter.php
	system/database/drivers/sqlite/sqlite_driver.php
	system/database/drivers/sqlite/sqlite_forge.php
	system/database/drivers/sqlite/sqlite_result.php
	system/database/drivers/sqlite/sqlite_utility.php
	system/helpers/email_helper.php
	system/helpers/smiley_helper.php
	system/libraries/Cart.php
	system/libraries/Email.php
	system/libraries/Image_lib.php
	system/libraries/Javascript.php
	system/libraries/Javascript/Jquery.php
	system/libraries/Session/SessionHandlerInterface.php
	user_guide_src/source/changelog.rst
	user_guide_src/source/installation/downloads.rst
	user_guide_src/source/installation/upgrading.rst

1 files changed, 14 insertions, 0 deletions

diff --git a/user_guide_src/source/installation/upgrade_314.rst b/user_guide_src/source/installation/upgrade_314.rst
new file mode 100644
index 000000000..3f2da6564
--- /dev/null
+++ b/user_guide_src/source/installation/upgrade_314.rst
@@ -0,0 +1,14 @@
+#############################
+Upgrading from 3.1.3 to 3.1.4
+#############################
+
+Before performing an update you should take your site offline by
+replacing the index.php file with a static one.
+
+Step 1: Update your CodeIgniter files
+=====================================
+
+Replace all files and directories in your *system/* directory.
+
+.. note:: If you have any custom developed files in these directories,
+	please make copies of them first.