Fixed ApplicationAction::rebuild()
Installation is now working, but still things are broken

Fixes #960
Merge branch 'refs/heads/master' into enhancement/cleanup

Conflicts:
	wcfsetup/install/files/lib/data/cronjob/log/CronjobLogEditor.class.php
	wcfsetup/install/files/lib/data/language/LanguageEditor.class.php
	wcfsetup/install/files/lib/data/package/Package.class.php
	wcfsetup/install/files/lib/data/template/Template.class.php
	wcfsetup/install/files/lib/data/user/group/UserGroup.class.php
	wcfsetup/install/files/lib/system/WCF.class.php
	wcfsetup/install/files/lib/system/application/ApplicationHandler.class.php
	wcfsetup/install/files/lib/system/cache/builder/ACPMenuCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/ApplicationCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/CleanupAdapterCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/EventListenerCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/LanguageCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/OptionCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/PackageDependencyCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/PageMenuCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/StyleCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/TemplateCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/TemplateListenerCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/TemplateListenerCodeCacheBuilder.class.php
	wcfsetup/install/files/lib/system/cache/builder/UserGroupPermissionCacheBuilder.class.php
	wcfsetup/install/files/lib/system/package/PackageArchive.class.php
	wcfsetup/install/files/lib/system/package/PackageDependencyHandler.class.php
	wcfsetup/install/files/lib/system/package/plugin/LanguagePackageInstallationPlugin.class.php
	wcfsetup/install/files/lib/system/search/acp/MenuItemACPSearchResultProvider.class.php
Some fixes
Fixed LanguageAddForm
Fixed application management
Fixed LanguageFactory
Fixed language reset after import
Bunch of fixes + added language variables for page menu
Added missing language variable
Merge branch 'master' of github.com:WoltLab/WCF
Added WCF as explicit requirement
Update dereferrer.php

HTML 5, supports semicola in URLs now.
Removed PackagePage
Renamed PackageViewPage -> PackagePage
PACKAGE_ID reflects the currently active application again
Added a hard break if Benchmark was called 200 times
Disabling benchmark during setup
Disabling benchmark during setup
Added check for infinite loop