Use a 64-bit variant of librxtxSerial.so for Linux
replacement string -> constants
[2180] fixed startup failure after update
[2225] CommonViewer now allows to add a generic IDoubleClickListener
[2225] CommonViewer limit internal dclick to PersistentObjects
[2225] Add group icon
[2090] Store Mandant in ElexisUiContext
[2090] c.e.c.ui.icons add IMG_SYRINGE