The OGS file converter is now called as an external application from the Tools menu
changed system call to work for win & linux
set highlight-button default to off (i.e. bounding boxes are switched off at ogs-gui start)
Merge pull request #303 from rinkk/CallFileConverter

Call file converter
renamed -active scalar- to -color by- in visualisation tab
Merge branch 'master' of https://github.com/ufz/ogs
added tooltips for visualisation options