Behaves similarly to the DatabaseUpgradeActivity. You have a
static list of ExperienceUpgrade models that include a "trigger"
version, where when a user upgrades through it a notification
will appear, and there will be a splash explanation screen.
Right now the splash screens are basic and not too configurable,
but that can be reworked as upgrades demand.
Closes#4151
1) No more blue/green for outgoing messages. Just lock or no lock.
2) Use 9-patches instead of shapes for better bubble performance.
3) Use tinting rather than different colored assets.
4) Change outgoing status indicators so that they don't change
width of the bubble as they update.
5) Switch to using ..., check, double-check for pending, sent,
delivered rather than using bubble tone to indicate pending.
// FREEBIE
1) ABS is now published as an AAR, so we can eliminate all local
dependencies and bundled jars.
2) Upgrade to ABS 4.4.0 (The Last Release) and deal with the loss
of Sherlock.Dialog by faking it with our own themes.
3) Remove all traces of ant. The modern world is here.
1) Broke out the UI elements of the major Activites into stylable
attributes.
2) Created a 'light' and 'dark' theme for the newly stylable attrs.
3) Touched up some of the UI spacing.
4) Implemented dynamic theme switching support.
1) Change all instances which use concatenation to build strings
with variables in them to use string formatting instead.
2) Extract all string literals from layouts and menus into strings.xml
3) Extract all string literals from code into strings.xml
