Bump Fork version to 3.9.6.

A lot of fixes have been done, it was about time :)

Bump version to 3.9.5

Bump our version to 3.9.4.

Improvements:

* Core: Moved startProcessingHooks from Backend/Frontend to Common/Core/Model.php
* Core: Save logs in an environment specific log file.
* Extensions: allow more different zip formats for module uploads.
* Locale: add a cli tool to import locale.
* Core: move phpunit to the root of the project.
* Core: save logs in environment specific files.
* Analytics: improve usability + add functionality
* Core: improve exception messages.
* Core: remove the unused timezones table.
* Core: remove unneeded require statements.
* Core: add a datagrid modifier to display boolean types.
* Core: bump minimum PHP version to 5.4

Bugfixes:

* Core: Fixed exporting .csv files.
* Analytics: Don't let Google_Client save files in the /tmp/Google_Client directory
* Core: Fixed CamelCasing issues with Spoon classes SpoonDatagridSourceArray, SpoonDatagridPaging & iSpoonDatagridPaging.
* Core: fix composer install on windows.
* Blog: fix image deletion for revisions.
* Core: fix exporting csv files

Updated the changelog and fixed the tests

Version 3.9.2

Bump version to 3.9.1

Merge branch 'master' of github.com:forkcms/forkcms

Prepare for release 3.8.7

Preparing for release.

Bump Fork version.