[ticket/12928] core.mcp_reports_gather_query_before

Adding the core.mcp_reports_gather_query_before
event to mcp backend.

PHPBB3-12928
[ticket/12928] Update to RC4

PHPBB3-12928
[ticket/12966] Sort posts by post_id in addition to sorting by post_time

This should make sure that posts with the same post time are properly sorted
on database backends like postgres.

PHPBB3-12966
[ticket/12991] Have events after/before "add warning" field - user and post

PHPBB3-12991
[ticket/12966] Sort by post_time and post_id where applicable

This change was not applied to the search as this would require a larger
rewrite of the search methods.

PHPBB3-12966
[ticket/12661] Load extensions templates from "all" folder by render()

PHPBB3-12661
[ticket/12661] Add template test

PHPBB3-12661
[ticket/12661] Add new line at the end  of files

PHPBB3-12661
[ticket/11909] Remove unused function load_migrations

Remove unused function load_migrations from \phpbb\db\migrator

PHPBB3-11909
Merge pull request #2909 from n-aleha/ticket/11909

[ticket/11909] Remove unused function load_migrations
Merge branch 'develop-ascraeus' into develop
Merge pull request #2865 from marc1706/ticket/12966

[ticket/12966] Sort posts by post_id in addition to sorting by post_time
Merge branch 'develop-ascraeus' into develop

# By Marc Alexander
# Via Dhruv Goel (1) and Marc Alexander (1)
* develop-ascraeus:
  [ticket/12966] Sort by post_time and post_id where applicable
  [ticket/12966] Sort posts by post_id in addition to sorting by post_time
[ticket/12991] Correct language mistakes

PHPBB3-12991
Merge pull request #2826 from brunoais/ticket/12928

[ticket/12928] core.mcp_reports_gather_query_before
Merge branch 'develop-ascraeus' into develop
[ticket/13024] Add template event viewtopic_body_postrow_post_content_footer

PHPBB3-13024
Merge pull request #2913 from Nicofuma/ticket/13024

[ticket/13024] Add template event viewtopic_body_postrow_post_content_footer
Merge branch 'develop-ascraeus' into develop

Conflicts:
	phpBB/styles/subsilver2/template/viewtopic_body.html
[ticket/13024] Fix event file (remove subsilver references)

PHPBB3-13024