Git commits in Moodle 3.5.0 by Martin Gauk

commit db3da830c1a7004d44408ea477df81704e6d66f2
Author: Martin Gauk <gauk@math.tu-berlin.de>
Date:   Fri, 23 Mar 2018 17:08:39 +0800
Tag:    v3.5.0-beta

MDL-61733 atto_table: fix creating new table

commit ef780a0051e9d0f4e7374cd8c27a95a890bbb96d
Author: Martin Gauk <gauk@math.tu-berlin.de>
Date:   Tue, 20 Mar 2018 21:13:08 +0800
Tag:    v3.5.0-beta

MDL-61519 coursecat: do not cache get_all_children_ids

commit c4172077dfd9432f9aa40aa8a0b7ab9e094359e6
Author: Martin Gauk <gauk@math.tu-berlin.de>
Date:   Tue, 06 Mar 2018 00:16:41 +0800
Tag:    v3.5.0-beta

MDL-61519 calendar: do not iterate through all categories