Improved parsers for holidays

fixes #52
Create NumeroUno.2014-05-02.html

Sample to issue #53
Rename NumeroUno.2014-05-02.html to NumeroUno.2014-04-02.html
Rename NumeroUno.2014-05-29.html to NumeroUno.2014-04-29.html
Rename NumeroUno.2014-04-02.html to NumeroUno.2014-05-02.html
added moment for better time manipulation, minor cleanup, closes #48
Price parsing

removed metrics for ITB
changed price parser so it parses "0,90,€" as a price and doesn't break
other (hopefully)
prices displayed with decimal comma separator
page header date format changed
Enhanced parsers

- parserUtil now provides String extensions
- removed metrics from all menus
- parse price for skolka
- fixes #53
Kamenica soup parsing

fixes #50
also fixes giuliano metrics removing
introduced RESTfull api to retrieve menus (by AJaX)
Engerau parsing fix
Merge branch 'master' of https://github.com/jakub-sturc/at11
Another fix
removed unused module
String extensions testing

added tests for string extensions, also fixed some of them
Ergenau weekend menu parsing
Merge upstream/master
improved string extension to provide consistent spacing
added some numerouno sample tests
added travis config for needed for #54