Add new style guide to global button style

- Updated new style guide for Primary, Secondary and Link button variants
- Changed box-shadow style from outer to inside on focus and active state
- Updated font weight from bold to regular for normal buttons and font
weight bold for link button.

Signed-off-by: Suren Neware <sneware9@in.ibm.com>
Change-Id: I38ca94baa9daec3fd03b830fc7b6d676fcce15b0
diff --git a/src/views/Configuration/DateTimeSettings/DateTimeSettings.vue b/src/views/Configuration/DateTimeSettings/DateTimeSettings.vue
index 77ab430..33e097c 100644
--- a/src/views/Configuration/DateTimeSettings/DateTimeSettings.vue
+++ b/src/views/Configuration/DateTimeSettings/DateTimeSettings.vue
@@ -73,9 +73,8 @@
                   </b-form-invalid-feedback>
                   <b-form-datepicker
                     v-model="form.manual.date"
+                    class="input-action"
                     button-only
-                    right
-                    size="sm"
                     :hide-header="true"
                     :locale="locale"
                     :label-help="