Refactor buttons

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/generic/buttons.scss

@@ -156,12 +156,15 @@
   }
 }
-
 .btn {
   @include btn-default;
   @include btn-white;
-  &.btn-success {
+  &.btn-success,
+  &.btn-new,
+  &.btn-create,
+  &.btn-save,
+  &.btn-green {
     @include btn-green;
   }
@@ -169,20 +172,10 @@
     @include btn-gray;
   }
-  &.btn-new {
-    @extend .btn-success;
-  }
-
-  &.btn-create {
-    @extend .btn-success;
-  }
-
-  &.btn-save {
-    @extend .btn-success;
-  }
-
-  &.btn-remove {
-    @extend .btn-danger;
+  &.btn-danger,
+  &.btn-remove,
+  &.btn-red {
+    @include btn-red;
   }
   &.btn-cancel {
@@ -212,14 +205,6 @@
       margin-right: 0px;
     }
   }
-
-  &.btn-save {
-    @extend .btn-primary;
-  }
-
-  &.btn-new, &.btn-create {
-    @extend .btn-success;
-  }
 }
 .btn-block {

app/assets/stylesheets/pages/projects.scss

@@ -142,11 +142,7 @@
     }
   }
 }
-.btn-green {
-   @include btn-green;
-   cursor: pointer;
-}
 .projects-search-form {
   .input-group .form-control {