[TIC-Web] Support __EXPAND__, Show icons (KS)

[TIC-Web] Support __EXPAND__, Show icons (KS)

1. "__EXPAND__ categoryname" in the first line of description
 will expand that rootblock for its category. (Root block only)

2. For blocks with KS info, add a filelist icon.

3. Show icon after checkbox

4. Initialize node.state.* at onRendered. (you should do it
 if you do not want to use $el and use the API directly)

Change-Id: Ia8a7d5e7fcbecb7b781ccbf8c6949049d7991f80
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>