Improved default view type.rdfs:Resource

Adding named graph on default service

Removing no html queries from models/type.rdfs:Resource/

Adding debug option to lodspk.sh
Moved modules to classes/

Also, moved `util/ldspk.sh` to `util/lodspk.sh` for consistency

Service now return 406 if service exists but the content type is not
supported

Fixed use of previously returned values in classModule

Adding new format for ref:Resource

Delete old format

Now {{base.endpoint.local}} works

Haanga doesn't support variables starting with 'end' (reported at
https://github.com/crodas/Haanga/issues/14)
Use of {{base.sparqlendpoint.local}} in the meantime

Adding better error report when sqlite is not writeable.

Move special/index to special/classes
Added special/namedGraphs

* Back to "first" instead of "f" to increase readability
* default views and models are now rdfs:Resource
* 'use_external_uris' renamed to 'mirror_external_uris' to increase
readability
* When mirroring URIs, LODSPeaKr will include two triples using
(owl:sameAs and  con:prerredUri) from mirrored URI to original one

Is annoying to iterate when I know I will get only one result, so for
the first row retrieved it is added at

```
r[.FILENAME]+.first.VARNAME.value
```
Also: Fixed small bug in default view

instead of {{r[.INNERFILE].value.VARIABLE}}

now it will be {{r[.INNERFILE].VARIABLE.value}}

Allow multiple/recursive queries
Allow use of multiple endpoints
Modified query tu support Haanga syntax
Fixed several bugs

Also, fixing error in default template

Adding templates dir
Removing owl:Class view and model to allow ln form rdfs:Class

Also, displaying results when there is only one class in special/index

Instead of creating a file for the model, create a dir (e.g.,
foaf:Person.view.html). Inside add different files (the name doesn't
matter). In the view file, they will be accessed as r.filename and can
be operated as usual

Created symlinks to default.*.rdf so we have a unified query/view for
each format (although it still can be modified, but is a bad practice)

Instead of creating a new class, users only need to create a model and
view file called special.<COMMAND>.[view|model].extension  Thus, it is
possible to create new URL such as http://<HOMEURL>/special<COMMAND>

- Added "special" URIs where an API can be created -- Included an
abstract class from where these special URIs can be implemented --
Included a basic class that implements the abstract class -- So far,
only listing instances for a class is implemented - Root for website
redirection -- Now it goes to /special/index to list all classes - Moved
include of settings below in commons.inc.php so it can override values -
Created owl:Class and rdfs:Class' templates