removed leftovers from submodule uglifyjs, added credits file,

cleaned up CSS, changed template to output clean XHTML 5,
added unit tests for 60% of the code, found a few bugs by doing
that and fixed them

tst/README.md

@@ -0,0 +1,16 @@
+Running unit tests
+==================
+
+In order to run these tests, you will need to install the following packages
+and its dependencies:
+* phpunit
+* php5-gd
+* php5-sqlite
+* php5-xdebug
+
+Example for Debian and Ubuntu:
+    $ sudo aptitude install phpunit php5-mysql php5-xdebug
+
+To run the tests, just change into this directory and run phpunit:
+    $ cd ZeroBin/tst
+    $ phpunit