Suppress/hide warnings by id/hash/symbolname

[danmar]

I would like that we improve handling of suppressions in the IDE plugin so it works more like the GUI.

In the GUI you can right click on a warning and select:

• "hide" then the warning is hidden (until reanalysis)
• "hide all with id" then all warnings with the same id are hidden (until reanalysis)
• "suppress by id" then the warnings with the same id are suppressed (suppression is added in project file). The plugin would need to be able to add the suppression in the projectfile or in a optional configuration file (xml suppressions).
• I would like that we add a "suppress..." option the user can choose if the suppression should use the hash and symbolname?