MDL-45636 course_rest: changed modcontext to coursecontext
MDL-45538 files: restore missing records in draft areas
 MDL-35008 Lesson: url decode rules not applied to answers and responses
MDL-47966 Add default content type and encoding
MDL-45204 phpunit: Fixed test_localcachedir test

make_localcache_directory is the first call to make
localcache, which is already created by reset. So deleting
existing localcache directory will pass this test
MDL-47883 admin: Fix missing string in the plugin validation
MDL-47797 question preview: show more technical info

It is helpful for developers creating question types (at least) to be
able to see this.
MDL-47797 quesion preview: improve the behat script

Tests a few more buttons, and also verify more of the UI.
MDL-48008 gradeimport_xml: report errors usefully
MDL-48010 grade import from URL: don't corrupt the URL.
Automatically generated installer lang files
MDL-47968 mod_forum: fixed search form HTML5 validation
MDL-47969 mod_survey: fixed HTML5 validation of index.php
MDL-47917 cachestore_memcached: fixed get_many ordering
Merge branch 'wip_MDL-47966_m27_defaultheaders' of https://github.com/skodak/moodle into MOODLE_27_STABLE
MDL-26447 gradebook: Default gradedisplaytype fixed for all locales
Merge branch 'MDL-35008_27' of git://github.com/jmvedrine/moodle into MOODLE_27_STABLE
Merge branch 'wip-MDL-45538-m27' of git://github.com/marinaglancy/moodle into MOODLE_27_STABLE
MDL-45538 Fix version bump.
MDL-47865 mod_feedback - XSS through $searchstring in mod/feedback/mapcourse.php