set default line space percent option in fb reader.
improve cr3's cite function.
add delete citation in cr3.

Conflicts:

	code/src/cr3/cr3_onyx/src/cr3widget.h
Merge branch 'master' of github.com:onyx-intl/boox-opensource
Merge pull request #16 from weihua/master

add cr3 cite.  set default line space percent option in fb reader.