API Disable discontinued Google Spellcheck in TinyMCE

Replaced by browser-based spellchecking if available (Chrome, Firefox),
with instructions on how to use PSpell as an alternative.
Validate 'archiveDate' user data in Versioned

Not a security issue as such, since the user input is sanitized
before being used in Versioned->augmentSQL(). But it shouldn't
reach the session state either, since that's commonly assumed
to be sanitized data, and it leaves unnecessary room for error.

strtotime() has fairly loose validation rules around dates,
but its a good "first line of defence".
FIX Double slashes in ParameterConfirmationToken
Merge pull request #2336 from hafriedlander/fix/flush_30

FIX Double slashes in ParameterConfirmationToken
Only have Scrutinizer check PHP files
Exclude docs and images foldes from Scrutinizer
Correct line length and indentation
Merge pull request #2348 from simonwelsh/scrut

Scrutinizer fixes
Fix Behat window switching in chrome

Workaround only, see https://groups.google.com/forum/#!topic/behat/QNhOuGHKEWI
BUGFIX: fixed grammatical errors and formatting issues
Merge pull request #2363 from jbridson/patch-8

BUGFIX: fixed grammatical errors and formatting issues
"edit" form expansion in AssetUploadField

Form wasn't expanding because of fixed heights. Backported fix from 3.1.
Update 2-extending-a-basic-site.md

Fixed a few wording issues and added some clarity to links eg: Tutorial One (Building a basic site)
Count, not Length
Merge pull request #2400 from jbridson/patch-9

Update 2-extending-a-basic-site.md
FIX Privilege escalation through Group hierarchy setting (SS-2013-003)

See http://www.silverstripe.org/ss-2013-003-privilege-escalation-through-group-hierarchy-setting/
FIX Privilege escalation through Group and Member CSV upload (SS-2013-004)

See http://www.silverstripe.org/ss-2013-004-privilege-escalation-through-group-and-member-csv-upload/
FIX Privilege escalation through APPLY_ROLES assignment (SS-2013-005)

See http://www.silverstripe.org/ss-2013-005-privilege-escalation-through-apply-roles-assignment/
Linking to older security issue in change log

Mainly for consistency with the newer format
FIX Disallow permissions assign for APPLY_ROLES (SS-2013-005)

See http://www.silverstripe.org/ss-2013-005-privilege-escalation-through-apply-roles-assignment/