You may write a .desktop file. Read: http://www.mail-archive.com/ubuntu-phone%40lists.launchpad.net/msg18884.html

Following the suggestion the asker created a .desktop file in .local/share/applications with the following contents:

[Desktop Entry]
Name=Usage statistics
Type=Application
Exec=webapp-container /home/phablet/Usage/index.html
Terminal=false
X-Ubuntu-Touch=true

The asker says it does the trick for him. It is not very flexible but suits his needs.