Add support for adding new database

[blitzmann]

• Adds ability to navigate to a DB that currently holds no information (previously defaults to first available database)
• Sets new variable newDB to current if database being requested is new (used as a flag for the navigation)
• Sets validation rules on requested database now that we are not simply checking against available databases.
• Sets new variable max_databases that is set to the sever's max database configuration. This is used to validate requested database indexm, but I also have plans to use it in a few other places.
• Creates a new navigation option "+ Add DB" that, when clicked, opens a modal with a dropdown of available databases.

When navigated to a new database, it shows up with a + next to it in the navigation, showing you that it's still new. If the user does not add data to the database and then navigates to another database, the new database information is lost and the "+ Add DB" option is present again

Pictures: (because everyone loves pictures)

[sasanrose]

Thanks. However, I am against the idea of the layout file getting bigger and bigger. Therefore, we have to divide it to smaller files. A good example in this case is that you could put the modal div into another view. Or we can move some js scripts into individual js files. Moreover, what happens when the maximum number of databases is set to a large number. I believe we will have a very awkward and useless drop-down of dbs. May be we can change it to a simple text area. What's your idea?

[eugef]

I think that we can use drop-down with autocomplete.

[blitzmann]

I agree that the layout file should be split. TBH, that was one of my gripes I was mentioning with the layout and general structure of the project. I think there are many improvements that can be made over time with the templating system, where JS should go, streamlining, etc. I'm not too familiar with the templating system PHPRedmin uses, so I didn't want to poke around too much - I just decided to put the modal where the confirmation modal already is as both can be accessed from any page and it seemed to be the logical choice.

I will continue to look into navigation and layout of templates and try to find improvements and reduce redundancy.

As for the list of databases being too big - I never thought of that. I originally put a text input, but thought showing which databases were available via <select> would be a more interesting way to display it. As @eugef says, we could add an autocomplete. Or if max_databases is above a certain threshold, switch to text input. Not sure what you would want to do. =)