Merge pull request #704 from xiaohutai/master

Extension: MetaTags -> Added section "getting started" to readme
Bumping version number to 1.3.1 to make a new release.
Merge branch 'master' of https://github.com/bolt/bolt
Bumping version to 1.4 dev
Adding a default config.yml.dist for ImportWXR.
xMerge branch 'master' of github.com:bolt/bolt
Update config.yml.dist
Update config.yml.dist
Update config.yml.dist
Imporved config for ImportWXR slightly.
Some minor improvements to Stack. Fixes #702

- When adding an item in the UI, disable the button
- Don't show the button, if the item is already on the stack.
Just corrected some minor CKEditor CSS errors.
Set default timezone to UTC.
Added "getLatestId" function to Storage.php
Fix small quirk in Tagcloud: make sure there's some whitespace between the tags.
Refactored the 'save' button to save Ajaxy. Added a 'Save & return to overview' button, and added indicator for when saving. Fixes  #423.
Implemented "imageinfo" twig function. Fixes #710
Small fix.
Trimming the list of queries _before_ adding it to the logged collection. Saves a bit of memory.
Added ReCaptcha module to SimpleForms

with fully configurable parameters using config.yml