PLT-3418, PLT-2950, PLT-3375, PLT-3382, PLT-3446, PLT-3465: Multiple UI Improvements (#3449)

Improving help text margins

Updating changes for get link and create post files

Fixing icon for select team screen

Fixing styles for select team button

Adding improvements to posts UI

Adding improvement to post layout

Updating changes for post controls

Updating z-index for sidebar--right

Updating help text position

Fixing code for posts

Fixing css for post view

Pushing improvements for posts view

Updating changes for post view

Updating post layout

Fixing system time css

Updating header for system posts

Updating post css

Removing opacity and changing color for system messages

Simplifying root post and system post behaviour

Removing images from compact view

Updating help text for display

Updating embed preview text for advanced option

PLT-3490 - Fixing RHS issue on Edge

webapp/components/create_post.jsx

@@ -85,7 +85,7 @@ class CreatePost extends React.Component {
             submitting: false,
             initialText: draft.messageText,
             ctrlSend: PreferenceStore.getBool(Constants.Preferences.CATEGORY_ADVANCED_SETTINGS, 'send_on_ctrl_enter'),
-            centerTextbox: PreferenceStore.get(Preferences.CATEGORY_DISPLAY_SETTINGS, Preferences.CHANNEL_DISPLAY_MODE, Preferences.CHANNEL_DISPLAY_MODE_DEFAULT) === Preferences.CHANNEL_DISPLAY_MODE_CENTERED,
+            fullWidthTextBox: PreferenceStore.get(Preferences.CATEGORY_DISPLAY_SETTINGS, Preferences.CHANNEL_DISPLAY_MODE, Preferences.CHANNEL_DISPLAY_MODE_DEFAULT) === Preferences.CHANNEL_DISPLAY_MODE_FULL_SCREEN,
             showTutorialTip: false,
             showPostDeletedModal: false,
             typing: false
@@ -325,7 +325,7 @@ class CreatePost extends React.Component {
         // wait to load these since they may have changed since the component was constructed (particularly in the case of skipping the tutorial)
         this.setState({
             ctrlSend: PreferenceStore.getBool(Preferences.CATEGORY_ADVANCED_SETTINGS, 'send_on_ctrl_enter'),
-            centerTextbox: PreferenceStore.get(Preferences.CATEGORY_DISPLAY_SETTINGS, Preferences.CHANNEL_DISPLAY_MODE, Preferences.CHANNEL_DISPLAY_MODE_DEFAULT) === Preferences.CHANNEL_DISPLAY_MODE_CENTERED,
+            fullWidthTextBox: PreferenceStore.get(Preferences.CATEGORY_DISPLAY_SETTINGS, Preferences.CHANNEL_DISPLAY_MODE, Preferences.CHANNEL_DISPLAY_MODE_DEFAULT) === Preferences.CHANNEL_DISPLAY_MODE_FULL_SCREEN,
             showTutorialTip: tutorialStep === TutorialSteps.POST_POPOVER
         });
     }
@@ -381,7 +381,7 @@ class CreatePost extends React.Component {
         this.setState({
             showTutorialTip: tutorialStep === TutorialSteps.POST_POPOVER,
             ctrlSend: PreferenceStore.getBool(Preferences.CATEGORY_ADVANCED_SETTINGS, 'send_on_ctrl_enter'),
-            centerTextbox: PreferenceStore.get(Preferences.CATEGORY_DISPLAY_SETTINGS, Preferences.CHANNEL_DISPLAY_MODE, Preferences.CHANNEL_DISPLAY_MODE_DEFAULT) === Preferences.CHANNEL_DISPLAY_MODE_CENTERED
+            fullWidthTextBox: PreferenceStore.get(Preferences.CATEGORY_DISPLAY_SETTINGS, Preferences.CHANNEL_DISPLAY_MODE, Preferences.CHANNEL_DISPLAY_MODE_DEFAULT) === Preferences.CHANNEL_DISPLAY_MODE_FULL_SCREEN
         });
     }
 
@@ -503,7 +503,7 @@ class CreatePost extends React.Component {
         }
 
         let centerClass = '';
-        if (this.state.centerTextbox) {
+        if (!this.state.fullWidthTextBox) {
             centerClass = 'center';
         }