[app][reprocessing] add documentation of the reprocessing application

3 jobs for fix_7 in 4 minutes and 18 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #42718
test:python3.5-stretch-pyqt5

00:04:14

passed #42719
test:python3.5-stretch-pyside2

00:04:14

passed #42720
test:test-xas-tutorials

00:04:17