* Hide upload form if the user has no permission.
* Add status code and reason phrase to upload failed message.

"CLONE THIS REPOSITORY" is not proper message for SVN repository. Use
more neutral message, "REPOSITORY URL."

* Merge CodeApp.getURL and CodeApp.getSvnURL.
* In views for Code Browser and Code History, when getting a url to
clone a repository, use CodeApp.getURL instead of an argument passed as
the url.

Conflicts:
	app/models/User.java

- password length over 4 character
- retyped password confirmation
- add i18n messages
- error message definition
- apply bootstrap popover

- the main reason is some ajax bugs

Usage
-----

1. Uploader: Call fileUploader javascript function with uploader div,
editor textarea and url to the container of files. (e.g. "/files")

    fileUploader($('#upload-form'), $('#body'),
        "@routes.AttachmentApp.newFile");

2. Downloader: Call fileDownloader javascript function with downloader
div and url to the container of files. (e.g. "/files")

    fileDownloader($('.body-attachments'),
        "@routes.AttachmentApp.getFileList");