BUG UnsavedRelationList aren't checked

When saveInto is called on ListboxField and CheckboxsetField,
UnsavedRelationList should be an acceptable relationship type. This is
leading to relations not being saved on initial creation of Member
objects
Tab state overrides by class or HTML5 history state

Necessary to switch from tree view to list view programmatically,
which reloads the whole tabset and needs to enable the "list" tab.
Used for the new "Show list as children" functionality in the cms.
Removed stray code from HTMLEditorField.js
Typo "nee" -> "need"

Looks like Silverstripe needs the d.
Merge pull request #1295 from ss23/patch-5

Typo "nee" -> "need"
Removed invalid characters

No idea what those characters were meant to be, so I removed them.
Merge pull request #1296 from ss23/patch-6

Removed invalid characters
Adjusted docs to "simple" theme (thanks Nadeeth Lansakara)
FIX SplFixedArray causes segfaults in old versions of PHP
Merge pull request #1297 from silverstripe-rebelalliance/feature/config

FIX SplFixedArray causes segfaults in old versions of PHP
Fix minor formatting issues

Extra spaces in front of Action.
Removed the out of place text on GridField (is that meant to be a link or what?)
Missing a period on the end of some entries.
Merge pull request #1298 from ss23/patch-7

Fix minor formatting issues
Merge pull request #1288 from chillu/pulls/tab-state-overrides

Tab state overrides
Docs - Howto: Customize the Pages List in the CMS
Merge pull request #1291 from chillu/pulls/update-pages-list

Docs - Howto: Customize the Pages List in the CMS
Updated browser requirements, dropping IE7 support

See https://groups.google.com/forum/?fromgroups=#!topic/silverstripe-dev/GahZfDLvb-I
FIX #8328 Expose previously selected values of TreeMultiSelectField so they are not wipped out when selecting more values at an higher level in hierarchy
Merge pull request #1204 from dhensby/unsavedrelationlist-improvements

BUG UnsavedRelationList aren't checked
Allow setting the MySQL database port
Allow setting the database port in _ss_environment