Added a flag to overwrite existing skins when skins are generated
* default is "false"
* use mvn es.e-ucm.ead:ead-maven-plugin:generate-skins -Dskins.removeExisting=true
  to launch
Added text field with path to FileList widget fix #293
Merge pull request #466 from manuel-freire/profile-for-skin-regen

Added a flag to overwrite existing skins when skins are generated
Small Views#setView(String) improvement.
This is necessary in order to access Stage via Actor#getStage() inside ViewBuilder#initialize(Controller) method.
Improved RepositoryManager succeeded notification.
Small bugfix in BaseGallery.
Added timeout to notifications.
Improved GalleryGrid code readability.
Added RepositoryGallery notifications.
Removed unneeded listener.
Merge pull request #467 from anserran/fix293

Added text field with path to FileList widget
Merge pull request #469 from RotaruDan/onlineRepoImprovements

Online repository improvements
Added MainToolbar widget
Add PerspectiveButtons widget
Merge pull request #472 from anserran/perspectives

Add PerspectiveButtons widget
Merge pull request #471 from anserran/maintoolbar

Added MainToolbar widget
Default language .props file now looks like that of any other language
* i18n.props "default" key must now reference another key
* messages.props for default key must now sport proper language
* language files are now lazy-loaded at first resolution
Apply new convention to all existing language files
Fix references from other java files
Fix comments before merge
Added javadoc to newly-public constants in I18N
Merge pull request #470 from manuel-freire/fix-default-language

Fix default language