Changeset 12761 for branches/HiveStatistics/sources/HeuristicLab.Services.WebApp.Maintenance/3.3/WebApp/services

#2429: Worked on the maintenance WebApp plugin:

• Space Usage Page: Displays the number of rows and allocated disk space for every database table
• Plugin Page: Shows unused plugins and provides functionality to delete all and specific plugins
• FactTask Page: Allows to aggregate all Job Tasks to a single task for a given job or jobs within an selected time period
• FactClientInfo Page: Allows to aggregate consecutive FactClientInfo entries with the same state and isallowedtocalculate flag