Improve wording for header and placeholders

app/views/projects/blob/_replace.html.haml

@@ -12,12 +12,12 @@
           .dropzone
             .dropzone-previews.blob-upload-dropzone-previews
               %p.dz-message.light
-                Attach files by dragging & dropping or
+                Attach a file by drag & drop or
                 = link_to 'click to upload', '#', class: "markdown-selector"
           %br
           .dropzone-alerts{class: "alert alert-danger data", "data-dismiss" => "alert", style: "display:none"}
           = render 'shared/commit_message_container', params: params,
-            placeholder: 'Replace this file because...'
+            placeholder: 'Replace file'
           .form-group
             .col-sm-offset-2.col-sm-10
               = button_tag 'Replace file', class: 'btn btn-small btn-primary btn-replace-file', id: 'submit-all'

app/views/projects/blob/_upload.html.haml

@@ -12,13 +12,12 @@
           .dropzone
             .dropzone-previews.blob-upload-dropzone-previews
               %p.dz-message.light
-                Attach files by dragging & dropping or
+                Attach a file by drag & drop or
                 = link_to 'click to upload', '#', class: "markdown-selector"
-
           %br
           .dropzone-alerts{class: "alert alert-danger data", "data-dismiss" => "alert", style: "display:none"}
           = render 'shared/commit_message_container', params: params,
-            placeholder: 'Upload this file because...'
+            placeholder: 'Upload new file'
           .form-group
             .col-sm-offset-2.col-sm-10
               = button_tag 'Upload file', class: 'btn btn-small btn-primary btn-upload-file', id: 'submit-all'

app/views/projects/blob/new.html.haml

 .gray-content-block.top-block
-  Create new file or
-  = link_to 'upload existing one', '#modal-upload-blob',
+  Create a new file or
+  = link_to 'upload', '#modal-upload-blob',
     { class: 'upload-link', 'data-target' => '#modal-upload-blob', 'data-toggle' => 'modal'}
+  an existing one
 = render 'projects/blob/upload'