Tag for version V1.4.3.p4

git-svn-id: https://joinup.ec.europa.eu/svn/joinup/tags/V1.4.3.p4@16 e836fa02-95ea-409d-8f09-02c8e990ffde
Tag for version V1.4.3.p4

git-svn-id: https://joinup.ec.europa.eu/svn/joinup/tags/V1.4.3.p4@17 e836fa02-95ea-409d-8f09-02c8e990ffde
Tag for version V1.4.3.p4

git-svn-id: https://joinup.ec.europa.eu/svn/joinup/tags/V1.4.3.p4@18 e836fa02-95ea-409d-8f09-02c8e990ffde
Add upstream docs
Rename README to README.md
Merge v1.4.3p4 from upstream Joinup SVN repository
Add INSTALL.md
Update INSTALL.md