Update php-concrete5 to 5.7.5.13.

pkgsrc change:

* Now support php71 using security/php-pecl-mcrypt package.

5.7.5.7 April 28th, 2016

New Features

* Nice column view for thumbnail image browsing (Thanks MrKarlDilkington)
* Added Max Width as an option to the Image Slider block (thanks cryophallion)
* Added configuration option concrete.misc.require_version_comments (defaulted
  off) to enable the requiring of version comments (thanks mlocati)

Other improvements and bug fixes are too many to write here, please refer release note: https://documentation.concrete5.org/developers/background/version-history/5757-release-notes.

5.7.5.8 May 23, 2016

* German, Japanese and Russian languages are now included
* Image Slider Bug Fixes
* Using blank alt tags in Image Slider, Image and Content blocks if no alt is
  provided, rather than the HtmlObject default “#” ones.

5.7.5.9 July 25, 2016

New Features

* Rescan files through the file manager now scans 5 at a time, works through
  the queue.
* Added option to ignore page permissions to the Page List block
* Dutch language is now included (Thank you Ramonleenders)

Other improvements and bug fixes are too many to write here, please refer release note: https://documentation.concrete5.org/developers/background/version-history/5759-release-notes.

5.7.5.10 December 1, 2016

* Minor bug fixes
* Fixed insecure use of non-random str_shuffle when creating user tokens
* Improvements to update process for version 8.

5.7.5.11 December 7, 2016

Bug Fixes

* Works again properly on PHP 5.3.
* Fixed bug that made upgrading impossible on PHP < 5.5.9.
* Fixed page not found error when clicking on a topic list to filter the page
  list in the blog.
* Controller bug fixes and security updates.

5.7.5.12

Bug Fixes

* Fixed bug with Environment Information not working on PHP below 5.4.

5.7.5.13 December 16, 2016

Bug Fixes

* Once again, Environment Information is now available in the Dashboard.

(taca)