[Glitch] Rename from instance to server.

Port 46e806cd2f to glitch-soc

app/javascript/flavours/glitch/features/getting_started/index.js

@@ -166,7 +166,7 @@ export default class GettingStarted extends ImmutablePureComponent {
           <div className='getting-started__footer'>
             <ul>
               {invitesEnabled && <li><a href='/invites' target='_blank'><FormattedMessage id='getting_started.invite' defaultMessage='Invite people' /></a> · </li>}
-              <li><a href='/about/more' target='_blank'><FormattedMessage id='navigation_bar.info' defaultMessage='About this instance' /></a> · </li>
+              <li><a href='/about/more' target='_blank'><FormattedMessage id='navigation_bar.info' defaultMessage='About this server' /></a> · </li>
               <li><a href='https://joinmastodon.org/apps' target='_blank'><FormattedMessage id='navigation_bar.apps' defaultMessage='Mobile apps' /></a> · </li>
               <li><a href='/terms' target='_blank'><FormattedMessage id='getting_started.terms' defaultMessage='Terms of service' /></a> · </li>
               <li><a href='https://docs.joinmastodon.org' target='_blank'><FormattedMessage id='getting_started.documentation' defaultMessage='Documentation' /></a></li>

app/javascript/flavours/glitch/features/public_timeline/index.js

@@ -127,7 +127,7 @@ export default class PublicTimeline extends React.PureComponent {
           onLoadMore={this.handleLoadMore}
           trackScroll={!pinned}
           scrollKey={`public_timeline-${columnId}`}
-          emptyMessage={<FormattedMessage id='empty_column.public' defaultMessage='There is nothing here! Write something publicly, or manually follow users from other instances to fill it up' />}
+          emptyMessage={<FormattedMessage id='empty_column.public' defaultMessage='There is nothing here! Write something publicly, or manually follow users from other servers to fill it up' />}
         />
       </Column>
     );

app/javascript/flavours/glitch/features/ui/components/report_modal.js

@@ -97,7 +97,7 @@ export default class ReportModal extends ImmutablePureComponent {
 
         <div className='report-modal__container'>
           <div className='report-modal__comment'>
-            <p><FormattedMessage id='report.hint' defaultMessage='The report will be sent to your instance moderators. You can provide an explanation of why you are reporting this account below:' /></p>
+            <p><FormattedMessage id='report.hint' defaultMessage='The report will be sent to your server moderators. You can provide an explanation of why you are reporting this account below:' /></p>
 
             <textarea
               className='setting-text light'