Updated siteconfig layout to be more like modeladmin
Translations: Switch to Transifex format

- Based on new (last) translation download from getlocalization.com
- Removed untranslated strings. Getlocalization started including those at some point
which is highly annoying, unnecessary and breaks the new transfix system,
since it'll mark all of the english strings as actual translations
- Avoid dots in entities. It confuses the Transifex YML parser
- Removed some locales unknown to Transifex which didn't have any translations anyway
- Removed "lolcat" locale, uses custom notation (en@lolcal)
  which SilverStripe's i18n system can't handle
  (needs mapping from SS naming to Zend naming)
- Renamed "Te Reo/Maori" locale from "mi_NZ" to "mi" (Transifex/CLDR notation)
- Namespaced all entities used in templates (deprecated usage)
- Converted dots to underscores where template filenames are used for namespaces,
since Transifex YML parsing handles them as separate YML keys otherwise
- Removed whitespace in entity names, SilverStripe i18n can't handle it
Translations: Switch to Transifex format

- Based on new (last) translation download from getlocalization.com
- Removed untranslated strings. Getlocalization started including those at some point
which is highly annoying, unnecessary and breaks the new transfix system,
since it'll mark all of the english strings as actual translations
- Avoid dots in entities. It confuses the Transifex YML parser
- Removed some locales unknown to Transifex which didn't have any translations anyway
- Removed "lolcat" locale, uses custom notation (en@lolcal)
  which SilverStripe's i18n system can't handle
  (needs mapping from SS naming to Zend naming)
- Renamed "Te Reo/Maori" locale from "mi_NZ" to "mi" (Transifex/CLDR notation)
- Namespaced all entities used in templates (deprecated usage)
- Converted dots to underscores where template filenames are used for namespaces,
since Transifex YML parsing handles them as separate YML keys otherwise
- Removed whitespace in entity names, SilverStripe i18n can't handle it
- Only allow selection of locales registered through i18n::$all_locales to avoid
  issues with unknown locales in Zend's CLDR database
BUG: Context menu too long (Fixes #811)

Added javascript to add and remove classes on context sub menus, to
allow for multi column layout.
Merge pull request #820 from chillu/pulls/transifex-3.0

Translations: Switch to Transifex format (3.0)
Merge pull request #821 from chillu/pulls/transifex-3.1

Translations: Switch to Transifex format (3.1)
Merge remote-tracking branch 'origin/3.0' into 3.1

Conflicts:
	lang/en.yml
	templates/CMSPageHistoryController_versions.ss
FIX ArchiveDate enforcement
FIX Check for stage and drafts in SiteTree::canView()
Merge pull request #825 from simonwelsh/canview

FIX Check for stage and drafts in SiteTree::canView()
Merge pull request #824 from hafriedlander/fix/archivedate

FIX ArchiveDate enforcement
Updated translation master file
FIX Add SiteTree link tracking as an extension, and apply to SiteTree itself
Updated translations
Merge pull request #809 from ARNHOE/3.1-siteconfig

Updated siteconfig layout to be more like modeladmin
CMS tree pane to scroll to the page being edited. Fixes #827
Merge branch 'context-menu' of https://github.com/adrexia/silverstripe-cms into adrexia-context-menu
Revert "Updated siteconfig layout to be more like modeladmin"

This reverts commit afd9f282790ae426eb8c841d43e7485d4e1dc7d1.
See https://github.com/silverstripe/silverstripe-cms/issues/830
Fixed fromDocument usage in .cms-tree

See https://github.com/silverstripe/silverstripe-cms/pull/823
Skip html entity SearchFormTest for PostgreSQL

Should be fixed, but its not trivial.