Tracking of fixes to synch with TS Port

[tfrancart]

@SteinerPascal We need to do some bugfixes in Sparnatural for a client. I will use this issue to track what is fixed so you can synchronize with the TS port. It should not be anything too big.

• [x] done #301
• [x] todo #302
• [x] already done #297
• [x] #307
• [ ] complicated #308
• [x] already done #312 and latest fix of #274
• [x] already done #319
• [ ] linked to what pascal is doing #321
• [x] done #322
• [x] already done #323
• [ ] complicated #311
• [x] #328
• [x] #329
• [ ] linked to what pascal is doing #349

[SteinerPascal]

Okay sure thanks!