wrong apk name if it contains dot

[fabriziopicconi]

if apk name contains dot (ex: vlc_v2.5.12.apk), then apk_name_no_extensions becomes vlc_v2512 instead of vlc_v2.5.12

[alexMyG]

This is because AndroPyTool allows to use MongoDB, but it does not support dots in a key. This is something that I have to change. The key for each app in the database should be a unique ID or maybe a hash, but not the apk name.