make detail story expandable
fix like & ahare number at detail page
integrate Facebook SDK for sharing function
sort vendors by distance at local side
name the title of ImageViewActivity
fix crashes when clicking navigation button without GPS enable
fix the fan page link at about page
re-layout about page
make images' size fixed at detail page (adjustViewBound)
fix the enter position of imageViewActivity
add Flurry Analytics
adjust detail layout a little bit (images margin)
integrate facebook sdk by git submodule
refactor
Merge branch 'test'

Conflicts:
	.idea/gradle.xml
	.idea/misc.xml
	.idea/modules.xml
	.idea/vcs.xml
	.idea/workspace.xml