Update on insert Form widgets dialogs, b=45495, fix by neil, r=cmanske, sr=hewitt

editor/ui/composer/locale/en-US/editor.properties

@@ -60,8 +60,6 @@ NeedDocTitle=Please enter a title for the current page.
 DocTitleHelp=This identifies the page in the window title and bookmarks.
 AttributesFor=Current attributes for: 
 MissingImageError=Please enter or choose an image of type gif, jpg, or png.
-FormInputError=Please enter a name and value for this form field.
-EmptyHREFError=Please choose a location to create a new link.
 EmptyHREFError=Please choose a location to create a new link.
 LinkText=Link Text
 LinkImage=Link Image
@@ -69,6 +67,7 @@ MixedSelection=[Mixed selection]
 Mixed=(mixed)
 EnterLinkText=Enter text to display for the link:
 EmptyLinkTextError=Please enter some text for this link.
+EditTextWarning=This will replace existing content.
 #LOCALIZATION NOTE (ValidateNumber):Don't translate: %n% %min% %max%
 ValidateRangeMsg=The number you entered (%n%) is outside of the allowed range.
 ValidateNumberMsg=Please enter a number between %min% and %max%.
@@ -178,7 +177,8 @@ RemoveLinksAccesskey=n
 RemoveLinks=Remove Links
 StopLinks=Discontinue Link
 #
-NoAltText=It is recommended that you supply alternate text that will appear in text-only browsers, and that will appear in other browsers when an image is loading or when image loading is disabled.
+NoFormAction=It is recommended that you enter an action for this form. Self-posting forms are an advanced technique that may not work consistently in all browsers.
+NoAltText=If the image is relevant to the content of the document, you must supply alternate text that will appear in text-only browsers, and that will appear in other browsers when an image is loading or when image loading is disabled.
 SaveImageAs=Save Image (%NAME%)...
 NoSeparatorCharacter=Please enter a single character to use for separating into columns
 Apply=Apply