MDL-46088 Impossible to click on Atto in a Quiz in 'Secure' mode.
MDL-46088 Quiz: Prevent alert when clicking in editor in secure popup
MDL-46088 quiz secure window: further Atto JS fixes.
Automatically generated installer lang files
MDL-47183: viewhiddenactivities should use the module context

Thanks to Paulo Matos for the forum part of this change.
MDL-46712: Center EditPDF window on browser resize / zoom
MDL-47556 quiz: autosave should default to on for new installs
MDL-41593 admin: use default setting if preventexecpath active

This resolves problems when installing Moodle
and addons when preventexecpath active.

Please note the admin_setting_configfile is still
incorrectly restricted - this will be resolved by
MDL-40949.
MDL-46647 grades: Fix fetch_all_helper() towards cross-db

That helper, used to fetch information from DB by all the grade_object
chidren classes was not behaving properly handling TEXT/CLOB columns.

Instead of creating a property within every class listing the
existing columns, it seems to be a better solution to instrospect
the database metadata (cached) to ensure the correct SQL is generated
in every case.
MDL-46647 core_grades: Adding tests for fetch_all_helper()
MDL-47564 Availability: incorrect use of defined('PHP_UNIT')
MDL-47509 Profile restriction: Broken Oracle causes problem
MDL-47509 Profile restriction: More oracle/text fixes

1) Get rid of "uid" that is a reserved word.
2) Add cross-db support for text columns in the get_condition_sql() method
   by adding a new, defaulting to false for BC param and intensively using
   the sql_compare_text() helper to build the correct sql fragments.
MDL-47572 libraries: modify unittest to avoid random timing fail

Thanks to Nigel Cunningham
MDL-47583 tinymce_managefiles: correctly decode filename
MDL-47583 atto_managefiles: correctly decode filename
Merge branch 'MDL-46647-master' of git://github.com/FMCorz/moodle
Merge branch 'MDL-47509' of https://github.com/stronk7/moodle
MDL-36014 cohorts: fix error in SQL query
MDL-47594 core_accesslib: removed three useless lines of code