Fixed: scroll wheel speed is way to low in firefox

I increased scroll wheel speed to a sensible value
formatting
symbolic constant
FIXED: Error when binding several objects to the same objectController.selection.keyPath and objectController selection changes. Fixes issue #2039
fix for menu enabled state not beeing visually updated upon change
added manual test
Here is an ojtest for this issue.
Fixed: unsigned delegate methods of CPTokenField erased by CPTextField

Previously, the unsigned delegate methods _implementedDelegateMethods was erased by the CPTextField, so some delegate methods didn't work any more.
This PR just renames the unsigned delegate methods to _implementedTokenFieldDelegateMethods.
Added: added unit test for CPTokenField
Test: Added Tests for non-english locales

CPDateFormatter only supports the "en" locale by default. All other locales yield empty results for most symbols. The tests added ensure, that the english "default" values are returned if no specific data is available (which is currently the case for every locale except "en").
Fixed: CPDateFormatter now works for non-"en" locales

CPDateFormatter previously only defined symbols for "en"-locale. Using another locale simple yielded nil-results for most keys. This fix addresses this behavior by always returning the english symbols as default unless other symbols have been explicitly provided or set.
Fixed: removed unsued code in CPTokenFieldTest
Merge branch 'fix-menu-enabled-bindings' of https://github.com/daboe01/cappuccino into daboe01-fix-menu-enabled-bindings
Merge pull request #2076 from cacaodev/issue2039

FIXED: Error when binding several objects to the same objectController [+1]
Merge pull request #2135 from Dogild/TokenFieldDelegate

Fixed: unsigned delegate methods of CPTokenField erased by CPTextField
Formatting recent changes.
Merge pull request #2155 from krodelin/CPDateFormatter-emptyLanguages

Fixed: CPDateFormatter now works for non-"en" locales [+1]
Formatting: CPDateFormatter changes and tests.

Refs #2155.
Merge pull request #2013 from daboe01/fix-scrollwheel-speed-on-firefox

Fixed: scroll wheel speed is way to low in firefox [+1]
New: CPEvent scrollingDeltaX, scrollingDeltaY and hasPreciseScrollingDeltas.

Refs #2013.