Purge of sessions table

[aljawaid]

This can now be done through a cleaning job in the ContentCleaner plugin

New Plugin: ContentCleaner

After a long time in the making and with great efforts, contributions and support from @creecros and @alfred, this plugin has been initially released. ContentCleaner gives you greater control of your database from within Kanboard. Cleaning jobs are split into three sections, Automatic, Application and Plugins. Users will find the Application Cleaning Jobs most useful. For example, Job #2 under Application Cleaning resolves issues reported here: iCal data with duedate only - #54 by alfredb The…