Merge branch 'PPlaser' into 'master'

Adds PPL optical delay stage

See merge request SCS/ToolBox!39

Load.py

@@ -191,6 +191,9 @@ mnemonics = {
     "PP800_PhaseShifter": {'source':'SCS_ILH_LAS/DOOCS/PP800_PHASESHIFTER',
                  'key':'actualPosition.value',
                  'dim':None},
+    "PP800_SynchDelayLine": {'source':'SCS_ILH_LAS/DOOCS/PPL_OPT_DELAY',
+                 'key':'actualPosition.value',
+                 'dim':None},
     "PP800_DelayLine": {'source':'SCS_ILH_LAS/MOTOR/LT3',
                  'key':'AActualPosition.value',
                  'dim':None},