refactor: rename to currentLocation

similar, make it more clear the value applies to currently displayed
directory

public/locales/en/files.json

@@ -116,7 +116,9 @@
   "blocks": "Blocks",
   "localDatastore": "Local Datastore",
   "localDatastoreDescription": "Total size of all blocks currently stored on your IPFS node; this includes everything in the Files view (MFS), plus any additional low-level pins and any temporary cached blocks that were not garbage-collected yet.",
-  "filesDescription": "Total size of data in the current directory (if a subdirectory, the size of all data in Files view (MFS) is also displayed). If you have a big directory that is only partially fetched, a total size listed here could be bigger than your local repository.",
+  "currentLocationRoot": "My Files",
+  "currentLocation": "Current Location",
+  "currentLocationDescription": "Total size of data in the current directory (if a subdirectory, the size of all data in Files view (MFS) is also displayed). This value includes both local and remote blocks. If you have a big directory that is only partially fetched, a total size listed here could be bigger than your local repository.",
   "pinningQueue": "Pinning queue",
   "more": "More",
   "files": "Files",

src/files/header/Header.js

@@ -72,7 +72,7 @@ class Header extends React.Component {
               className='fill-teal PendingAnimation' />
           </a> }
 
-          <BarOption title={t('filesDescription')} text={t('app:terms:files')}>
+          <BarOption title={t('currentLocationDescription')} text={hasUpperDirectory ? t('currentLocation') : t('currentLocationRoot')}>
             { hasUpperDirectory
               ? (
                 <span>