fix for #1081: After changing a concentration the corresponding particle number needs to be updated.
fix for #1081: After changing a concentration the corresponding particle number needs to be updated.

Merge a fix from the mcaopt branch for the progress  bar

jonasfoe/COPASI,copasi/COPASI,jonasfoe/COPASI,jonasfoe/COPASI,copasi/COPASI,jonasfoe/COPASI,copasi/COPASI,copasi/COPASI,copasi/COPASI,jonasfoe/COPASI,jonasfoe/COPASI,copasi/COPASI,copasi/COPASI,jonasfoe/COPASI,jonasfoe/COPASI,copasi/COPASI,jonasfoe/COPASI,copasi/COPASI