Permissions and wms source changes for #74477 and #78734

* Modifications in persistence-geo-core to use new PermissionEntity version
* SourceTool entity for save gxp_sources
* persistence-ge-admin modifications to use this modifications
Admin and core modifications to save and restore correct permissions #74477
Remove property in permission entity #79828
Merge branch '8.5-SNAPSHOT-74477-78734-wms-sources-tools-permissions' into 8.5-SNAPSHOT-74477-78734-wms-sources-tools-permissions-merge
Merge pull request #84 from alediator/8.5-SNAPSHOT-74477-78734-wms-sources-tools-permissions-merge

8.5 snapshot 74477 78734 wms sources tools permissions merge