** Added rest endpoint for adding binary materials
** Changed workspace material uploader to add uploaded files into view
as "pages"
Merge branch 'FTR-44_material-editor' of
https://github.com/otavanopisto/muikku.git into FTR-44_material-editor

Conflicts:
	muikku-core-plugins/src/main/resources/META-INF/resources/workspaces/materials-management.xhtml
** Fixed parentId and nextSiblingId in workspace material management
upload view
** Removed NotEmpty validators from Boolean and Integer fields in
WorkspaceNode because validator works only with Strings and Collections
Merge branch 'FTR-44_material-editor' of https://github.com/otavanopisto/muikku.git into FTR-44_material-editor