Generate HTML documentation using MkDocs (WIP)

MkDocs is a static site generator geared towards building project documentation.
Documentation source files are written in Markdown, and configured with a single YAML file.

 * http://www.mkdocs.org/
 * http://www.mkdocs.org/user-guide/configuration/

Ref. #312

* remove pandoc-generated HTML documentation
* move markdown doc to doc/md/,
* mkdocs.yml:
  * generate HTML doc in doc/html
  * add pages TOC/ordering
  * use index.md as index page
* Makefile: remove execute permissions from generated files
* Makefile: rewrite htmlpages GFM to markdown conversion using sed:
   awk expression aslo matched '][' which causes invalid output on complex links with images or code blocks
* Add mkdocs.yml to .gitattributes, exclude this file from release archives
* Makefile: rename: htmldoc -> doc_html target
* run make doc: pull latest markdown documentation from wiki
* run make htmlpages: update html documentation

1 files changed, 25 insertions, 0 deletions

diff --git a/doc/md/Datastore-hacks.md b/doc/md/Datastore-hacks.md
new file mode 100644
index 00000000..78baa005
--- /dev/null
+++ b/doc/md/Datastore-hacks.md
@@ -0,0 +1,25 @@
+### Decode datastore content
+
+To display the array representing the data saved in `data/datastore.php`, use the following snippet:
+
+```php
+$data = "tZNdb9MwFIb... <Commented content inside datastore.php>";
+$out = unserialize(gzinflate(base64_decode($data)));
+echo "<pre>"; // Pretty printing is love, pretty printing is life
+print_r($out);
+echo "</pre>";
+exit;
+```
+This will output the internal representation of the datastore, "unobfuscated" (if this can really be considered obfuscation).
+
+Alternatively, you can transform to JSON format (and pretty-print if you have `jq` installed):
+```
+php -r 'print(json_encode(unserialize(gzinflate(base64_decode(preg_replace("!.*/\* (.+) \*/.*!", "$1", file_get_contents("data/datastore.php")))))));' | jq .
+```
+
+### Changing the timestamp for a link
+
+* Look for `<input type="hidden" name="lf_linkdate" value="{$link.linkdate}">` in `tpl/editlink.tpl` (line 14)
+* Replace `type="hidden"` with `type="text"` from this line
+* A new date/time field becomes available in the edit/new link dialog.
+* You can set the timestamp manually by entering it in the format `YYYMMDD_HHMMS`.