changes

/intro/getting-started/install redirects to /intro/getting-started
/guides/hcl folders with only index changed to named individual files
/docs/install/index.html to docs/install.html
/docs/other dumped to root
/docs/basics/terminology -> /docs/terminology
/docs/configuration/from-1.5 -> /docs/from-1.5
/docs/from-1.5/functions.html -> /docs/from-1.5/functions/index.html
[BREAKING] /docs/from-1.5/functions/collection/index.html -> /docs/from-1.5/functions/collection/index-fn.html
/docs/from-1.5/functions/*/overview.html -> /docs/from-1.5/functions/*/index.html
/docs/builders/amazon-* -> /docs/builders/amazon/*
/docs/builders/azure-* -> /docs/builders/azure/*
/docs/builders/hyperv-* -> /docs/builders/hyperv/*
/docs/builders/oracle-* -> /docs/builders/oracle/*
/docs/builders/osc-* -> /docs/builders/outscale/*
/docs/builders/outscale.html -> /docs/builders/outscale/index.html
/docs/builders/parallels-* -> /docs/builders/parallels/*
/docs/builders/virtualbox-* -> /docs/builders/virtualbox/*
/docs/builders/vmware-* -> /docs/builders/vmware/*
/docs/builders/vsphere-* -> /docs/builders/vmware/vsphere-*

notes:

empty index files on all from-1.5/functions/*
how do the generated docs work? can we keep it even with changes?
should any of the other builders be nested under a subdirectory? like alicloud-ecs, tencent-cvm or ucloud-uhost?