Support @ bindings when using 1.5 components

[drummerboof]

Currently, UI Router supports < and = parameters when routing using the component syntax. When the component contains a @ parameter binding, an error is thrown with the message TypeError: Cannot read property '1' of null

Plunkr showing the issue is here: http://embed.plnkr.co/mtNl3MgXrfTkv8NnrtqQ/ The error occurs can be seen in the console.

It seems to be an issue with the handling of the scope bindings in the ng1 viewsBuilder at https://github.com/angular-ui/ui-router/blob/1.0.0-alpha.4/src/ng1/viewsBuilder.ts#L74

[pdanpdan]

On the same topic, optional bindings do not work (<?name, =?name). It tries to create a ?name="::$resolve.?name"

[christopherthielen]

also, bindings that start with UpperCase letters are also broken and translate to -upper-case="::$resolve.UpperCase"

https://plnkr.co/edit/ttcFRmVp9StCTWkHeZbH?p=preview

[christopherthielen]

alpha.5 supports @ bindings