1.3.8
Translated using Weblate (Japanese)

Currently translated at 100.0% (1810 of 1810 strings)
#2126:
 - ensure that no exception occurs on node.details and node.note
 - implement both, details and note by new ConvertibleHtmlText
 - add new Proxy.Node.setDetailsText() for consistency (although
   setDetails(String) works the same
 - node.note.to.plain still returns the text after formula evaluation
Merge remote-tracking branch 'origin/1.3.x' into 1.3.x
new: HtmlUtils.join(String... texts)
Merge remote-tracking branch 'origin/1.3.x' into 1.3.x
no formula evaluation in notes at all
Merge remote-tracking branch 'origin/1.3.x' into 1.3.x
#2132: improved documentation of Map.node(id)
Merge remote-tracking branch 'origin/1.3.x' into 1.3.x
freeplane.sh: add a line which is to be commented out to turn off splash
Merge remote-tracking branch 'origin/1.3.x' into 1.3.x
ant format-translation after pull from weblate
add line to freeplane.l4j.ini which is to be enabled to turn off splash
performance optimization: do not create NPE, return null
Do not consider selected views  inside of clones of selected nodes in copy/cut and similar operations
Fix unlinking of deleted nodes
fix undo for deletion of cloned nodes
performance optimization: do not create NPE, return null
Merge remote-tracking branch 'origin/1.3.x' into 1.3.x