[ticket/13203] Add method for byte by byte comparison to drivers helper

PHPBB3-13203
[ticket/13203] Use string_compare method in passwords drivers

PHPBB3-13203
[ticket/13203] Fix passwords manager tests

PHPBB3-13203
Merge pull request #3056 from marc1706/ticket/13203

[ticket/13203] Use constant time comparison method for comparing password hashes
[ticket/security-159] Only show first 8 characters of login keys in UCP

SECURITY-159
[ticket/13205] Add a mark all messages read link to PM folders

PHPBB3-13205
Merge pull request #3057 from marc1706/ticket/security-159

[ticket/security-159] Only show first 8 characters of login keys in UCP
[ticket/13205] Remove superfluous newline

PHPBB3-13205
[ticket/13205] Explicitly cast ids to integers and reformat SQL

PHPBB3-13205
Merge pull request #3058 from naderman/ticket/13205

[ticket/13205] Add a mark all messages read link to PM folders