Move pages under tldr, lint run.sh, update docs

tldr/calligrastage

@@ -0,0 +1,22 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# calligrastage
+
+> Calligra's presentation application.
+> See also: `calligraflow`, `calligrawords`, `calligrasheets`.
+> More information: <https://manned.org/calligrastage>.
+
+- Launch the presentation application:
+
+`calligrastage`
+
+- Open a specific presentation:
+
+`calligrastage {{path/to/presentation}}`
+
+- Display help or version:
+
+`calligrastage --{{help|version}}`