make lady model as default model on start.

Change-Id: Iae963678e18362f28c45537984ea34f26417e084
Signed-off-by: Sharl <amoiz.shine@gmail.com>
change main activity's title.

Change-Id: I66cd15b30e8d3e3461720546f7ac1753e39bf113
Signed-off-by: Sharl <amoiz.shine@gmail.com>
merge FSUtil class from branch 2.1 into master manually.

Change-Id: Ib9ded230abaa6ee0eab0c4c6cd98235cb04a86d5
Signed-off-by: Sharl <amoiz.shine@gmail.com>
partly merge MainActivity class from branch 2.1 into master manually.

Change-Id: I24ca973cb35a7e239d82e2d6eb16f67c9138349d
Signed-off-by: Sharl <amoiz.shine@gmail.com>
fix a UI bug that model's old shoes will shown while return back after
wear new shoes.

Change-Id: I3e4d7ad6a4bb5e77d257677c72bda6a5c0b8748d
Signed-off-by: Sharl <amoiz.shine@gmail.com>