(Bug #996172)

+ Using utf-8 string as file/folder name:
+ Setting the maximum of file/folder name length to 80. (Max filename
length on many OS is limited to 256 bytes)
+ Percent encoding URL. It is a non human-readable string. However, the
modern web browsers (Firefox3, Chrome, >IE7) will automatically display
it into human readable URL.

Change-Id: Ibb0d4e5d5fbe01bc49b5ad9ba68e4bc483938016
Signed-off-by: Son Nguyen <son.nguyen@catalyst.net.nz>