SSDM-3501 : Better layout management (ongoing work)

...plugins/eln-lims/1/as/webapps/eln-lims/html/css/style.css

...re-plugins/eln-lims/1/as/webapps/eln-lims/html/index.html

.../as/webapps/eln-lims/html/js/controllers/LayoutManager.js

...as/webapps/eln-lims/html/js/controllers/MainController.js

...s/eln-lims/1/as/webapps/eln-lims/html/js/util/FormUtil.js

...pps/eln-lims/html/js/views/DataSetForm/DataSetFormView.js

.../html/js/views/ExperimentForm/ExperimentFormController.js

...n-lims/html/js/views/ExperimentForm/ExperimentFormView.js

...s/webapps/eln-lims/html/js/views/Export/ExportTreeView.js

...webapps/eln-lims/html/js/views/Inventory/InventoryView.js

...pps/eln-lims/html/js/views/LabNotebook/LabNotebookView.js

...pps/eln-lims/html/js/views/ProjectForm/ProjectFormView.js

...eln-lims/html/js/views/SampleForm/SampleFormController.js

...bapps/eln-lims/html/js/views/SampleForm/SampleFormView.js

...js/views/SampleHierarchyTable/SampleHierarchyTableView.js

...n-lims/html/js/views/SideMenu/SideMenuWidgetController.js

...pps/eln-lims/html/js/views/SideMenu/SideMenuWidgetView.js

...webapps/eln-lims/html/js/views/SpaceForm/SpaceFormView.js

...n-lims/html/js/views/StorageManager/StorageManagerView.js

...s/eln-lims/html/js/views/TrashManager/TrashManagerView.js