Catalog improvements

[MV88]

• [ ] When the url lose the focus an on-the-fly validation should apply. it should verify that the service is available
• [ ] After the previous check, if positive, it should infer and populate the type and/or title of the service if possible.
• [ ] Add a tooltip on the service list that shows the url of that service or only of the service selected
• [ ] Save services with the map configuration.
• [ ] Add a delete button in edit mode and implement the related funcionality.
• [ ] The record items should not be cut (avoid scrollbar), but they should be displayed as a whole. We can change the page size accordingly to the height available
• [ ] Move the add to map button to the left as indicated in the mockup present in geosolutions-it/MapStore2#1783
• [ ] Move all the tools & plugin hidden by the catalog to the left of the catalog sidebar
• [ ] add localization of titles?

[tdipisa]

Issue out of date after recent catalog improvement provided in 2019.02.00