update plugintreeviewmodel
Merge branch 'master' into task_benedikt
start implementing a new function in SystemDbManager to query all available plugins
continue implementing plugin manager #8
added list of all attribute names and function to generate and fill the list to configuration class.
changed table model to use this list as header data.
you can now change the order of columns and rows in both table views
Merge branch 'master' into task_Jens
start implementing default function configuration #8
Merge branch 'task_Jens' into task_benedikt
- BugFix: A feature should not get an empty name (when editing in table view)
- continue implementing default function
default function #8
added QMaps with attributes to be displayed and functions that generate and select the attributes.
fixed bug in scalar entity dialog.
#6
Merge branch 'task_benedikt' into task_Jens
a default function can now be set for each feature type #8
bugfix: add the observation to the list of observations in class Geometry when assigning an observation from one geometry to another
bugfix: change name of trafo param feature in table view
settings dialog has a new tab for managing the displayed attributes.
the gui elements are created dynamically. If there is a new attribute, you only need to specify it in the configuration class lists.
Proxymodel decides what column to display, by using the configuration class´ lists and functions.

#6
Merge branch 'task_Jens' into task_benedikt
reimplemented sensorcontrol (add sensorListener)
reimplemented sensor interface (default plugin)
treeview in plugin manager #8