[ticket/12240] Added specific class name to posting buttons

PHPBB3-12240
[ticket/12240] Added class code for custom bbcodes based on bbcode_tag

PHPBB3-12240
[ticket/12240] Added template changes for subsilver2, too

PHPBB3-12240
[ticket/12240] fontsize => size; fontcolor => color and added bbcode- in96

PHPBB3-12240
[ticket/12239] Move deprecated passwords functions to compatibility file

The deprecated passwords functions are no longer used in the core and have
been replaced with the passwords manager. Therefore, the functions are
moved to the functions_compatibility file.

PHPBB3-12239
[ticket/12251] Sort IM profile fields alphabetically

PHPBB3-12251
[ticket/12251] Deactivate outdated profile fields by default

PHPBB3-12251
[ticket/12251] Enable displaying profile fields on memberlist, posts and pms

PHPBB3-12251
[ticket/12251] Load profile fields by default on posts, pms and memberlist

PHPBB3-12251
[ticket/12251] Add string validation for a-zA-Z0-9 and underscore

PHPBB3-12251
Merge pull request #2087 from marc1706/ticket/12239

[ticket/12239] Move deprecated passwords functions to compatibility file
[ticket/12250] Remove deprecated phpbb_clean_path function

The function phpbb_clean_path() in functions.php is deprecated as is not
used used 3.0/3.1 core

PHPBB3-12250
[ticket/12248] Restore id attributes to extension details (used by tests)

PHPBB3-12248
[ticket/12250] Remove deprecated phpbb_clean_path function

The function phpbb_clean_path() in functions.php is deprecated and is
replaced by filesystem class. Therefore, this function is moved to the
functions_compatibility file.

PHPBB3-12250
Merge remote-tracking branch 'VSEphpbb/ticket/12248' into develop

* VSEphpbb/ticket/12248:
  [ticket/12248] Restore id attributes to extension details (used by tests)
Merge remote-tracking branch 'VarunAgw/ticket/12250' into develop

# By Varun Agrawal
# Via Varun Agrawal
* VarunAgw/ticket/12250:
  [ticket/12250] Remove deprecated phpbb_clean_path function
  [ticket/12250] Remove deprecated phpbb_clean_path function
[ticket/10945] remove trigger_error call

removes trigger_error call incase no search results are found or start
variable exceeds the amount. So that search query is displayed in the
search box even if no results are returned.

PHPBB3-10945
[ticket/10945] Display search query when search fails in native search

If search fails and common words are present, split_keywords returns false
and search.php file prints appropriate message of common words.
If search fails and there are no common words, split_keywords returns true
and keyword_search returns false so that the search query is displayed in
search box.

PHPBB3-10945
[ticket/10945] Fix return values for split_keywords function

The function now returns false if all the words are common words and true
otherwise.

PHPBB3-10945
Merge branch 'ticket/10945' into ticket/10945-develop

* ticket/10945:
  [ticket/10945] Fix return values for split_keywords function
  [ticket/10945] Display search query when search fails in native search
  [ticket/10945] remove trigger_error call

Conflicts:
	phpBB/phpbb/search/fulltext_native.php