Add new fundamental features

[eralp85]

• [x] Add upload function and button to 'add page'
• [x] Add go to function which enables users to navigate through the different webpages.
• [x] Add share this post function related to e-mail
• [x] Add tag function.
• [x] Add like, prioritize,
• [ ] Add friend functions.
• [x] Map the pages and functions

[eralp85]

Upload and add new page functions are done. Users are able to upload anything they want to pages.

[eralp85]

All the pages are mapped.

[eralp85]

Tag function is added with django-taggit application.

[eralp85]

Following user is not completed. Like button is done