This reverts commit 7b7bb92d.

Conflicts:
	mod/upgrade.txt

In new logging api, xxx_get_view_actions() and xxx_get_post_actions()
will not be used to identify the paticipation of user. Event's crud
and edulevel status will define user's participation.

Conflicts:
	theme/bootstrapbase/style/moodle.css

If an image has custom alignment or margins - don't overwrite
them unless a new alignment option is chosen.

As default log store is changed to standard, test should
now take care of it

The availability changes change the course query for front page.

This only applied when themedesignermode was disabled, because the
first chunk is 0, but 0 is resolved to false. We needed to compare
$chunk with null in order to know if it was set.

It is already in the main lib/upgrade.txt but it should be mentioned here as
well.

1. Wrong reader class check and api
2. Passing logreader parameter for graph
3. Using proper time from for all log and today's log