Can create new blank project

[danimesq]

• Assign a number for it
• Create the project on a temporary folder
• List it on the "Recent projects" list (#36)
• Project info (containing its name) saved as .evproj XML file
• Links to its CSS and JS is saved on its HTML
• FrameworkJS automatically added
• Open tabs: index.html, style.css and script.js
• Load its index.html on its tab
• Panel with project info
• Update project info on .evproj XML file
• Add its style.css to the file list panel (openned on default text editor)
• "Save as" button to save it on a folder (it moves it from temporary folder, and it is updated on "Recent projects" list)
• "Save" button to update infos