Feature/add docs (#689)

* Add converted docs repo

* Set theme jekyll-theme-minimal

* Removed BC docs, added TOC

* Added TOCs, rewrote most important links in documentation. Linked README to new Github Pages site

* some link fixes

docs/programmers/api-variables/variable-debugging.md

@@ -0,0 +1,17 @@
+\$debugging {#variable.debugging}
+===========
+
+This enables the [debugging console](#chapter.debugging.console). The
+console is a javascript popup window that informs you of the
+[included](#language.function.include) templates, variables
+[assigned](#api.assign) from php and [config file
+variables](#language.config.variables) for the current script. It does
+not show variables assigned within a template with the
+[`{assign}`](#language.function.assign) function.
+
+The console can also be enabled from the url with
+[`$debugging_ctrl`](#variable.debugging.ctrl).
+
+See also [`{debug}`](#language.function.debug),
+[`$debug_tpl`](#variable.debug_template), and
+[`$debugging_ctrl`](#variable.debugging.ctrl).