Modify Trainings and Live projects page

The code is changed as follows,
1. The trainings page is moved to liveprojects page.
2. Initial course structure and cost per level templates are added in
trainings page.
3. Fixed the header page so that clicked page is shown correctly.
4. Unused code in express.css etc are removed.
5. Sizze.js is added as we found some exception if this not included.