Friend Updates
Added custom icon for pings

Just a simple circle icon
Properties
Resized new marker, centered anchor
Got friends view working

Up next: seeing only pings sent by friends
Got friend names, ability to add friends coming shortly

Using databases all day long
AddFriend activity and functionality

We need a way to confirm friendship on the other side. Friends should be
a two-way street.
Make toast when friend added so user knows
Ensured unique usernames, made database

Lots off Preference things going on, and with Parse and meticulous error
checking this extended to a rather long project. But now it's done, and
individual usernames work like a charm. Changing a username even removes
the old one from the database.
Looking over code connections, all good
Made friendship mutual, added friend requests
Can only send/receive pings from friends
Chagnes to friend handling, style change
Added about, debug, changed some colors
Added dialog for set username, checking for usernames
Enforcing one ping at a time. New pings w/o killing app process

Can now send new pings without killing the app process.
Converted friend list from activity to fragment
Made addFriend a fragment

No more isolated activities, all are fragments
Import fixes and package management
Little string changes