Add html pages for all the CRUD functions of the project.

[karamolegkos]

Add, delete and update of events need to have their own user friendly html pages.

[karamolegkos]

A page for the Create function is read using javascript and the bootstrap framework.
Also there has been work to make pages for the Update and Delete functions but they are not fully implemented yet.

[karamolegkos]

Made changes to the delete and update pages. Now this pages will be a search bar for the user to search the needed event to update or remove.

These pages will redirect the user to the Remove or Update page of the specified chosen event.

This is working right now with dummy events but the remove and update pages are not yet worked on.

[karamolegkos]

Added a page so the user can see all the events for a specific date.
There will be updates in this page soon.

[karamolegkos]

Made some updates on the styling of the last page added.
Also added a page named "View Event" used to show an Event to the User with all its details.
To end the main Front-End phase of the project, the "Remove Event" and "Update Event" pages are missing. They will be made in the upcoming days.