luci-app-olsr-viz: migrate to JavaScript-based implementation

[Ayushmanwebdeveloper]

Hi! I've completed the migration of luci-app-olsr-viz to JavaScript. All the features are functioning just like they did in the old Lua app.

And in the old app, there was an issue of HTTP 413 Content Too Large after running it twice, which resulted in a blank page because the app was saving 130 Cookies at a time as it was saving all the nodes in cookies. I tested it on many routers and was able to reproduce the issue every time.

So, I removed the saving of the nodes in the cookies, as it was making the app unusable.

Now everything is working normally, and I've fixed the error.

[jow-]

I suggest to modify viz_setup() to take the target div directly instead of a div name. Then simply replace this delayed script instantiation with a synchronous call to viz_setup(vizDiv, "main", "nodes", "edges"); viz_update();

and the vizDiv instantiation with var vizDiv = E('div', { 'id': 'RSIFrame', 'name': 'RSIFrame', 'style': 'border:0px; width:0px; height:0px; visibility:hidden;' }, viz_res);

[Ayushmanwebdeveloper]

I fixed the issues & also modified script file for directly using divs & inputs instead of getting them by id. and I implemented callingviz_setup(vizDiv, "main", "nodes", "edges"); viz_update(); synchronously.

[Ayushmanwebdeveloper]

And I will test it for some time more.

[Ayushmanwebdeveloper]

I tested it & fixed all the issues. Thanks for the review.

[systemcrash]

my $0.02 - I like this.

[andibraeu]

@jow- this migrated app looks good to me

[jow-]

Merged, thanks!