PLT-1915: Fix Timestamps are displayed as 12 hour even when set to 24 hour mode (#2852)

webapp/components/rhs_comment.jsx

@@ -275,7 +275,7 @@ export default class RhsComment extends React.Component {
                                         day='numeric'
                                         month='long'
                                         year='numeric'
-                                        hour12={true}
+                                        hour12={!Utils.isMilitaryTime()}
                                         hour='2-digit'
                                         minute='2-digit'
                                     />

webapp/components/rhs_root_post.jsx

@@ -240,7 +240,7 @@ export default class RhsRootPost extends React.Component {
                                         day='numeric'
                                         month='long'
                                         year='numeric'
-                                        hour12={true}
+                                        hour12={!Utils.isMilitaryTime()}
                                         hour='2-digit'
                                         minute='2-digit'
                                     />

webapp/components/search_results_item.jsx

@@ -100,7 +100,7 @@ export default class SearchResultsItem extends React.Component {
                                     <time className='search-item-time'>
                                         <FormattedDate
                                             value={post.create_at}
-                                            hour12={true}
+                                            hour12={!Utils.isMilitaryTime()}
                                             hour='2-digit'
                                             minute='2-digit'
                                         />

webapp/components/time_since.jsx

@@ -41,7 +41,7 @@ export default class TimeSince extends React.Component {
                     month='long'
                     day='numeric'
                     year='numeric'
-                    hour12={true}
+                    hour12={!Utils.isMilitaryTime()}
                     hour='numeric'
                     minute='2-digit'
                 />