$http's deprecated custom callback methods

[anteriovieira]

This PR fixes #1989.

The .success and .error methods are deprecated and have been removed from AngularJS 1.6. Use the standard .then and .catch method instead.

Before:

$http(...).
success(function onSuccess(data, status, headers, config) {
  // Handle success
  ...
}).
error(function onError(data, status, headers, config) {
  // Handle error
  ...
});

After:

$http(...).
  then(function onSuccess(response) {
    // Handle success
    var data = response.data;
    var status = response.status;
    var statusText = response.statusText;
    var headers = response.headers;
    var config = response.config;
    ...
  }, function onError(response) {
    // Handle error
    var data = response.data;
    var status = response.status;
    var statusText = response.statusText;
    var headers = response.headers;
    var config = response.config;
    ...
  });

// or

$http(...).
  then(function onSuccess(response) {
    // Handle success
    var data = response.data;
    var status = response.status;
    var statusText = response.statusText;
    var headers = response.headers;
    var config = response.config;
    ...
  }).
  catch(function onError(response) {
    // Handle error
    var data = response.data;
    var status = response.status;
    var statusText = response.statusText;
    var headers = response.headers;
    var config = response.config;
    ...
  });

[nmccready]

I think you'll need .then (template) => template.data or .then ({data}) => here as well.

[akrawchyk]

This didn't bump the semvar version in bower.json to allow it to be installed for angular 1.6... The range 1.2 - 1.6 is parsed to >=1.2 <1.6 so this fails to meet dependencies for angular >=1.6 unfortunately.