* github-marc1706/ticket/12822:
[ticket/12822] Fix test runs of avatar manager_test
[ticket/12822] Add method for deleting avatars and use confirm_box
[ticket/12822] Remove "None" option from avatar select boxes
[ticket/12932] Add method for allowing override of \phpbb\datetime class
* marc1706/ticket/12932:
[ticket/12932] Remove set_datetime_class method from user class
[ticket/12932] Fix tests and calls to create_datetime
[ticket/12932] Add method for getting the datetime class and allow overriding
[ticket/12956] Ensure the contact columns have been added before using t...
* nickvergessen/ticket/12956:
[ticket/12956] Ensure the contact columns have been added before using them
[ticket/12794] Properly validate google+ field against valid character set
* marc1706/ticket/12794:
[ticket/12794] Properly validate google+ field against valid character set
Ticket/12671 Possibility to use NOT LIKE expression
* Geolim4/ticket/12671:
[ticket/12671] Possibility to use NOT LIKE expression
[ticket/12671] Possibility to use NOT LIKE expression
[ticket/12671] Possibility to use NOT LIKE expression
[ticket/12671] Possibility to use NOT LIKE expression
[ticket/12671] Possibility to use NOT LIKE expression
[ticket/12941] Check for Sami parse errors on Travis CI.
* bantu/ticket/12941:
[ticket/12941] Fix remaining Sami complaints.
[ticket/12941] Check for Sami parse errors on Travis CI.
[ticket/12941] Add sami.conf.php for Travis CI.
[ticket/12718] Use remove_topic_from_statistic() for delete_topic
* dhruvgoel92/ticket/12718:
[ticket/12718] Use a separate variable for sql query
[ticket/12718] Fix spacing and type casting
[ticket/12718] Fix docblocks
[ticket/12718] Add tests to check user_posts on post deletion
[ticket/12718] Update docblock
[ticket/12718] Use remove_topic_from_statistic() for delete_topic
* github-nickvergessen/ticket/12710:
[ticket/12710] Fix missing closing bracket
[ticket/12710] Prefix column so it does not start with a number
[ticket/12710] Pass the original column data to the create function
[ticket/12710] Fix foreach generation
[ticket/12710] Compare to uppercase version
[ticket/12710] Do not try to match the uniqueness in the query
[ticket/12710] Remove table_name from index_name before deleting and recreating them
[ticket/12710] Can not use upper in oracles where claus
[ticket/12710] Correctly select index name and compare to column name
[ticket/12710] Fix "ORA-00972: identifier is too long [972]" on oracle
[ticket/12710] Fix problems with creating unique indexes on oracle
[ticket/12710] Correctly fetch unique and normal indexes only in MSSQL
[ticket/12710] Fix changing the column type on oracle
[ticket/12710] Prepare get_existing_indexes() for other DBMS
