[TIC-Core] handle dscription data, show other blocks in block

[TIC-Core] handle dscription data, show other blocks in block

These are emergency implementation for TDC demo/keynotes
The syntax (__KS_URL__, __EXPAND__) can be changed later.

1. %description / __KS_URL__: URL

   allows to link KS (to extract ks script except for %packages) from a block.
TODO: if there are two blocks with ks, ignore one with warning. (and warning at choose)
TODO: apply the content from the URL to recipe for MIC

2. %description / __EXPAND__

   allows to expand the block by default at the load of TIC
TODO: in, __EXPAND: {str}, handle {str} AFTER filter-tab is implemented

3. Allow to show blocks that is not children.

Change-Id: If9e7b9ad92aa65b6e0f1d894a588b85bc2905bc3
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>