Change pagination behavior and add more customization options to it

[diazproduction]

Hi, I made some changes and adjustments to the way in which the pagination of the tables works:

• If the table has only one page (or no pages at all), it won't show the navigation controls (first, prev, next, last).

[ 1 ]

• If the user is on the very first or the very last page of the table, it won't show the first/prev or next/last buttons respectively:

([ 1 ]) [ 2 ] [ 3 ] [ 4 ] [>] [>>]

[<<] [<] [ 7 ] [ 8 ] ([ 9 ])

• If the first or the last page is within the range of the pagination size, it won't show the first or last button respectively:

[<] [ 1 ] ([ 2 ]) [ 3 ] [ 4 ] [>] [>>]

[<<] [<] [ 7 ] ([ 8 ]) [ 9 ] [>]

(These two last changes were made because in that way you can instantly show to the user where the table begins and ends.)

I also add some props on the options in order to be able of changing the text of the navigation controls, by default they are as they were before (<< < > >>) but now you can specify the name you want to give to it in case you would want change it:

var options = {
   prePage: "Anterior", // Previous page button text
   nextPage: "Siguiente", // Next page button text
   firstPage: "Primero", // First page button text
   lastPage: "Ultimo" // Last page button text
}

[Primero] [Anterior] [ 7 ] ([ 8 ]) [ 9 ] [Siguiente] [ Ultimo ]

I changed too the file custom-pagination-table.js in order to exemplify these customizations' options.

[AllenFang]

@diazproduction, thanks your contribution, it's a nice patch 👍 Anyway, I've released on v1.5.0

[diazproduction]

Thanks! :D