Remove duplicate parse_class_spec method.
Merge pull request #1836 from simonwelsh/remove-dup

Remove duplicate parse_class_spec method.
FIX Handle PHP 5.4's short array notation everywhere arrays are parsed.
NEW Allow specifying priority for translations

Priority for translations was hardcoded, and hardcoded the project name as "mysite".

This takes the order from a configuration property "module_prority". You can
use standard config fragment before and after rules to make a module less or
more important than anything else, with these tweaks:

 - Unless it has it's order explicitly defined, the "project" module (normally mysite)
   will be considered highest priority

 - There is an "other_modules" value in the order list which will be replaced by
   all the modules (except the project module) that don't have their order
   explicitly defined.
Added docs for i81n.moduole_priority.
Only set GridField state in request if a value is submitted
BUG Fixing queries on non-existent table breaking archive site

With a many to many relation, e.g. SiteTree_MyRelation, and listing
them in your template then adding ?archiveDate=x in the URL, a SQL
error is shown because Versioned::augmentSQL() tries to query the
non-existent table "SiteTree_MyRelation_versions" assuming there's
versioning setup, but there isn't.
Merge pull request #1840 from halkyon/archive_versions_table_without_versions

BUG Fixing queries on non-existent table breaking archive site
Merge pull request #1837 from simonwelsh/short-array-parse

FIX Handle PHP 5.4's short array notation everywhere arrays are parsed.
DataObject->duplicate() test

Advanced relationship copying is already tested further down,
but doesn't cover the same basics. Triggered by a CMS bug
which turned out to be unrelated (https://github.com/silverstripe/silverstripe-cms/issues/689)
NEW Allow setting of ASSETS_DIR in _ss_environment.php
[UI] New Spinner
[UI] Panel Animation
[UI] ToggleCompositeField Accordion height fix
[Feature] field quoting and agregation by Table.Column fields
[FIX] BASE_PATH for subfolders and linked directories
[IMPROVEMENT] change silverstripe-cahe to cache folder
[UI] GridField paginator improvement
[FEATURE] Image Cropped Resize
[IMPROVEMENT] Minify HTML on template generation