Task #9886: URLs are now sanitized (unwanted '/'-multiples are replaced by single '/'), which solves the problem regarding the display of inspection plots.

Task #9607: moved convertNullToUndefined into datacontroller. Only apply to certain fields. Do not copy task in grid anymore.

Task #9607: added override for deleting data of tasks with unfinished successors. These are set to obselete if you proceed with the delete action

- Added mouse left-click behaviour to Info-column items similar to already existing context-menu options: 'select blocking predecessors' and 'open in LTA catalog'
- Task/project description now available as Mom ID tooltip as well.
- Improved vertical alignment of items shown in disk usage column
- Some refactoring

Task #9607: no seperate alert box per deleted task anymore. For now, log to console. Should become a log window in the scheduler UI

Task #9607: scisup would like to be involved in chosing these kind of defaults, and what to do after the claim expires, we now choose a default period of a year, and do nothing if the claim expires