Revert OperationFactory interface changes made in a1f86ac

By specifically invoking a new when creating an operation instance
makes it quite difficult for external operation constructors, as there
is no easy way for external ops to share non-document state.

All WebODF ops don't have this issue as new functions can easily be
added to the OdtDocument interface to support the new requirements.
Merge pull request #464 from peitschie/opfactory-tweak

Revert OperationFactory interface changes made in a1f86ac
Only save style properties which have actually
been modified by the user in the dialog, upon
pressing "OK".
Fix return type annotation of mappedProperties
Merge pull request #508 from adityab/pdialog-formdiff

Only save user-modified style properties
Publish the method "getDocumentAsByteArray" in "Editor" API
Merge pull request #516 from kossebau/publishMethodGetByteArrayInEditor

Publish the method "getDocumentAsByteArray" in "Editor" API
Make it possible to specify an absolute translations
path. By default, it is the translations directory
in programs/editor.
Make the default translations path relative to the dojo
config prefix.
Merge pull request #517 from adityab/translations-dojoprefix

Improved access for translations path
Fix packextension.js: runtime.readFile no longer returns a buffer for NodejsRuntime
Properly register/unregister components for ODT/ODP/ODS in FF-Add-on
Unbreak "download this document" button in FF extension

getUserData/setUserData was deprecated and is no longer available in latest
Firefox (e.g. 27.0). Using e.g. the dataset property instead did not work
for storing callback methods. As currently only one async requests without
a callback are used, any support for callbacks or sync requests was simply
removed. Proper implementation delayed till callbacks or sync requests are needed.
Rename Firefox add-on to "ODF Viewer"
Use new ids for the components of the FF extension

to avoid conflicts with the ids of the old version
where the components where not properly unregistered