ng-click is not working - angularjs

Question

I'm stuck with this problem for 2 days and I couldn't locate its core so any help on the matter is really appreciated.
I was creating a form that was inline editable with xeditable and the edit(save/cancel) buttons were working as expected but the DELETE button is not calling the given method from the controller. I tried placing it on other parts in the code both as a button and a link and ng-click was not working both ways! I'm quite new at Angular so any debugging tips on how to solve this kinds of problems are welcome! Thanks in advance!
Here is the code from the app file:
var app = angular.module('app', ["Controllers", "xeditable"])
app.run(function (editableOptions) {
editableOptions.theme = 'bs3';
});
Here is the code for the controller (in different .js file from app.js)
angular.module("Controllers", [])
.controller("controller", ["$scope", "$http", function ($scope, $http) {
$scope.users= {};
//get display data
$http.get("/User/All").success(function (data) {
$scope.users= data;
});
//form methods
$scope.editUser = function (data, id) {
edit_data.UserID = id;
$http.post("/User/Edit", edit_data).success(function () {
angular.extend(data, { id: id });
});
};
$scope.deleteUser = function (index, id) {
$http.post("/User/Delete", id).success(function() {
$scope.users.splice(index, 1);
});
};
}]);
Here is the code from the form:
<container ng-app="app" ng-controller="controller">
<table class="table">
<tr>
<th>
Name
</th>
<th>
Surname
</th>
<th></th>
</tr>
<tr ng-repeat="user in users">
<td>
<span editable-text="user.Name" e-name="Name" e-form="rowform" e-required>
{{user.Name}}
</span>
</td>
<td>
<span editable-text="user.Surname" e-name="Surname" e-form="rowform" e-required>
{{user.Surname}}
</span>
</td>
<td style="white-space: nowrap">
<form editable-form name="rowform" onbeforesave="editUser($data, user.UserID)" ng-show="rowform.$visible" class="form-buttons form-inline" shown="inserted == user">
<button type="submit" ng-disabled="rowform.$waiting" class="btn btn-primary">
save
</button>
<button type="button" ng-disabled="rowform.$waiting" ng-click="rowform.$cancel()" class="btn btn-default">
cancel
</button>
</form>
<div class="buttons" ng-show="!rowform.$visible">
<button type="button" class="btn btn-primary" ng-click="rowform.$show()">edit</button>
<button type="button" class="btn btn-danger" ng-click="deleteUser($index,user.UserID)">delete</button>
</div>
</td>
</tr>