org.el (org-open-link-marker): Fix typo in docstring

* org.el (org-open-link-marker): Fix typo in docstring.
Merge branch 'maint'
Fix `org-open-at-point' in comments

* lisp/org.el (org-open-at-point): Return an error in comments, as
  there are no link to be found.
`org-open-at-point' right after an object still open it

* lisp/org.el (org-open-at-point): White spaces after an object are
  usually ignored by the function.  Though, when point is right after
  the object, still activate it.
* testing/lisp/test-org.el (test-org/custom-id): Fix test.
When computing clock table, remove arbitrary limit on hierarchy depth.

* org-clock.el (org-clock-sum): Enlarge array of per-level clock
  totals as needed on demand.
org.el (org-link-prettify): Docstring cleanup

* org.el (org-link-prettify): Docstring cleanup.
ob-clojure.el: Don't use `cider-current-ns' to set the current namespace

* ob-clojure.el (org-babel-execute:clojure): Don't use
`cider-current-ns' to set the current namespace.

Thanks to Volker Strobel for reporting this issue.
Unescape links before opening them

* lisp/org.el (org-open-at-point): Unescape links before opening
  them.  This bug was introduced in
  fc9ce86cfc1ecf7e86028027a12875a26500e774.
org-agenda.el (org-agenda-custom-commands-contexts): Fix docstring

* org-agenda.el (org-agenda-custom-commands-contexts): Fix docstring.