Updated timeline.js with i18n support

added da_DK locale. Thanks go to @iktuz, https://gist.github.com/iktuz/3749287
Merge pull request #94 from bjarkebech/patch-1

Updated timeline.js with i18n support
Merge pull request #97 from ova2/master

Added "editable" properties to the return object in the getItem() method
Fixed: could not change an items field editable, and fields editable using changeItem, and className could not be retrieved from method getItem (see issues #95, #97)
Fixed issue #96: move and zoom buttons in navigation menu where still visible when Timeline was not zoomable and not movable
Added license information to the root of the project (see issue #99)
Fixed #88: Renamed option intervalMin to zoomMin and option intervalMax to zoomMax
Updated options zoomMin and zoomMax for GWT
Updated options zoomMin and zoomMax for GWT
Completed Timeline i18n (localized text)