add front page prototype
apply new route naming rule and refactor get_app_list function
Added --gaia-dir & --distribution for #48
Merge pull request #53 from askeing/issue_48

Added --gaia-dir & --distribution
Merge pull request #52 from gasolin/master

add web UI to specify default paths, r=yurenju
Issue #55: add unit tests for fetch_icon
Merge pull request #56 from yurenju/unittest

Issue #55: add unit tests for fetch_icon r=gasolin