Add basic travis config to make docs

Install sphinx and deps with pip (python lang so no sudo)

tell travis which branches to build

Merge pull request #19 from nickvergessen/update/mod2ext
Move nickvergessen/howto-convert-phpbb30mod-to-phpbb31ext to doc

[ticket/13874] Add master to sami API docs
PHPBB3-13874

Merge pull request #3560 from Nicofuma/ticket/13790
[ticket/13790] Update phpcs

Merge remote-tracking branch 'github-nicofuma/ticket/13280' into develop-ascraeus
* github-nicofuma/ticket/13280:
  [ticket/13280] Output escaping for the symfony request object
  [ticket/13280] Add new tests
  [ticket/13280] Make the tests failing
  [ticket/13280] Revert "Merge pull request #3107 from marc1706/ticket/13280"

Merge branch 'prep-release-3.1.1' into develop-ascraeus
* prep-release-3.1.1:
  [ticket/13271] Disable CC sender feature for anonymous users
  [prep-release-3.1.1] Add 3.1.1 CHANGELOG
  [prep-release-3.1.1] Add 3.1.1 migration file
  [ticket/13263] Make sure default style exists and clean up code
  [ticket/13263] Only install/set prosilver if no style available
  [ticket/13263] Use prosilver as default style if user's style doesn't exist
  [ticket/security-164] Correctly format page_name
  [ticket/security-164] Sanitize all global variables in symfony_request class
  [ticket/13248] Use functional framework login method in tests
  [ticket/13248] Correctly pass provider name
  [ticket/13248] Always use provider collection for getting provider
  [ticket/13248] Allow specifying different auth provider in provider collection
  [ticket/13248] Use auth provider collection for getting provider
  [ticket/13262] Mention htaccess file when updating from 3.0 to 3.1
  [ticket/13267] Update Automatic Update instructions to include vendor directory
  [ticket/13268] Properly append ternary result in get_existing_indexes()
  [prep-release-3.1.1] Update version number to 3.1.1

Conflicts:
        build/build.xml
        phpBB/includes/constants.php
        phpBB/install/schemas/schema_data.sql

[prep-release-3.1.1] Add 3.1.1 CHANGELOG

[ticket/13262] Mention htaccess file when updating from 3.0 to 3.1
PHPBB3-13262

Merge branch 'ticket/13268' into prep-release-3.1.1
* ticket/13268:
  [ticket/13268] Properly append ternary result in get_existing_indexes()

[ticket/13268] Properly append ternary result in get_existing_indexes()
PHPBB3-13268

Merge branch 'ticket/13267' into prep-release-3.1.1
* ticket/13267:
  [ticket/13267] Update Automatic Update instructions to include vendor directory

Merge pull request #3104 from marc1706/ticket/13248-alt
[ticket/13248] Login functions need to use provider collection for retrieving provider

[prep-release-3.1.1] Update version number to 3.1.1

Merge remote-tracking branch 'github-security/ticket/security-164-alt' into prep-release-3.1.1
* github-security/ticket/security-164-alt:
  [ticket/security-164] Correctly format page_name
  [ticket/security-164] Sanitize all global variables in symfony_request class

Merge branch 'ticket/13262' into prep-release-3.1.1
* ticket/13262:
  [ticket/13262] Mention htaccess file when updating from 3.0 to 3.1

[ticket/13271] Disable CC sender feature for anonymous users
PHPBB3-13271

Merge branch 'ticket/13271' into prep-release-3.1.1
* ticket/13271:
  [ticket/13271] Disable CC sender feature for anonymous users

[prep-release-3.1.1] Add 3.1.1 migration file

[ticket/13267] Update Automatic Update instructions to include vendor directory
PHPBB3-13267

Merge remote-tracking branch 'github-marc1706/ticket/13263' into prep-release-3.1.1
* github-marc1706/ticket/13263:
  [ticket/13263] Make sure default style exists and clean up code
  [ticket/13263] Only install/set prosilver if no style available
  [ticket/13263] Use prosilver as default style if user's style doesn't exist

Merge branch 'prep-release-3.1.0' into develop-ascraeus
* prep-release-3.1.0:
  [ticket/13223] Fix USERNAME email template variable in notification

Merge branch 'ticket/13223' into prep-release-3.1.0
* ticket/13223:
  [ticket/13223] Fix USERNAME email template variable in notification

[prep-release-3.1.0] Update CHANGELOG with last minute changes

[ticket/13223] Fix USERNAME email template variable in notification
admin_activate_user.php notification type is assigning usernames to email
template variables using user_loader->get_username() in 'no_profile' mode,
which in its turn calls get_username_string() function in 'no_profile' mode.
This causes HTML markup in emails for username colour.

PHPBB3-13223

Merge branch 'prep-release-3.1.0' into develop-ascraeus
* prep-release-3.1.0:
  [prep-release-3.1.0] Update CHANGELOG with last minute changes

Merge pull request #3056 from marc1706/ticket/13203
[ticket/13203] Use constant time comparison method for comparing password hashes

Merge pull request #3017 from nickvergessen/ticket/13033
[ticket/13033] Fix "Duplicate entry 'notification.type.*' for key 'type'"

Merge branch 'develop-olympus' into develop-ascraeus
* develop-olympus:
  [ticket/13531] Send 404 Not Found.
  [ticket/13531] Explicitly disallow trailing paths (e.g. PATH_INFO).

Merge pull request #3316 from bantu/ticket/13531
[ticket/13531] Explicitly disallow trailing paths (e.g. PATH_INFO).

[ticket/13234] Never allow autologin/remember me to modify the userid
This prevents admin relogin with forced user id from overwriting
remember me cookies

PHPBB3-13234

[ticket/13234-2] Correctly verify that user_id is set in user data array
PHPBB3-13234-2

Merge branch 'ticket/13234' into ticket/13234-2
* ticket/13234:
  [ticket/13234] Never allow autologin/remember me to modify the userid

[ticket/13234-2] Never allow autologin/remember me to modify the userid
Ascraeus version of 64d97d0787a63b3c646f89237574ac566ed89c50 commit

PHPBB3-13234

Merge remote-tracking branch 'github-marc1706/ticket/13207' into develop-ascraeus
* github-marc1706/ticket/13207:
  [ticket/13207] Use assert_checkbox_is_checked for registration test

[develop-ascraeus] Update version number to 3.1.1-RC1-dev

Merge pull request #3067 from marc1706/ticket/13216
[ticket/13216] Use gmdate() instead of date() in datetime tests

[ticket/13205] Remove superfluous newline
PHPBB3-13205

[ticket/13205] Add a mark all messages read link to PM folders
PHPBB3-13205

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

Merge pull request #3001 from Nicofuma/ticket/13113
[ticket/13113] Updates the base url only when the front-end isn't app.php