Rewrite to static site

With a complete reorganisation of the directory structure and most of
the content converted to pandoc-flavoured markdown.

Some TODO's left before this can go live:
- Main page
- Atom feeds
- Bug tracker

dat/dump/grenamr.md

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+% GTK+ Mass File Renamer
+
+GRenamR is a GTK+ mass file renamer written in Perl, the functionality is
+insipred by the
+[rename](https://search.cpan.org/~rmbarker/File-Rename-0.05/rename.PL) command
+that comes with a Perl module.
+
+GRenamR allows multiple file renaming using perl expressions. You can see the
+effects of your expression while typing it, and can preview your action before
+applying them.  The accepted expressions are mostly the same as the rename
+command (see above paragrah): your expression will be evaluated with `$_` set
+to the filename, and any modifications to this variable will result in the
+renaming of the file. There's one other variable that the rename command does
+not have: `$i`, which reflects the file number (starting from 0) in the current
+list. This allows expressions such as as `$_=sprintf'%03d.txt',$i`.
+
+**Download:** [grenamr](/download/code/grenamr-0.1.pl)
+(copy to /usr/bin/ to install)
+
+Requires the Gtk2 Perl module. Most distributions have a perl-gtk2 package.
+
+## Example expressions
+
+    y/A-Z/a-z/                       # Convert filenames to lowercase
+    $_=lc                            # Same
+    s/\.txt$/.utf8/                  # Change all '.txt' extensions to '.utf8'
+    s/([0-9]+)/sprintf'%04d',$1/eg   # Zero-pad all numbers in filenames
+
+    # Replace each image filename with a zero-padded number starting from 1
+    s/^.+\.jpg$/sprintf'%03d.jpg',$i+1/e
+
+## Caveats / bugs / TODO
+
+- Calling functions as 'sleep' or 'exit' in the expression will trash the program
+- It's currently not possible to manually order the file list, so $i is
+not useful in every situation
+- It's currently not possible to manually rename files or exclude items
+from being effected by the expression
+- The expression isn't executed in the opened directory, so things like
+[-X](https://perldoc.perl.org/functions/-X.html) won't work
+
+## Screenshot
+
+![GRenamR screenshot](/img/grenamr.png){.scr}