use maven artifacts for chiralcode.colorpicker, wizardpager, and passy.holocircularprogressbar

[rhodey]

Source code of the following projects is currently within the Flock repo because they each lack maven artifacts.

https://github.com/chiralcode/Android-Color-Picker
https://github.com/passsy/android-HoloCircularProgressBar
https://github.com/romannurik/Android-WizardPager

I have forked colorpicker and holocircularprogressbar and opened pull requests which support creation of maven artifacts.

passsy/android-HoloCircularProgressBar#32
chiralcode/Android-Color-Picker#4

Hopefully the authors will merge these and then publish artifacts so we can remove their source code from the Flock project. Alternatively we can package and publish our own artifacts to the /WhisperSystems/maven repo, however I would prefer to first wait a bit and see if we can get these pulls merged.

It appears that someone has already gone through the work of cleaning up Android-WizardPager for use as a library project but still no maven artifact :(
https://github.com/TechFreak/WizardPager

[rhodey]

just opened a pull for maven artifacts of the wizardpager project >> suarezjulian/WizardPager#6