[scaloid] Improve API documentation (#69)

Inserted Android reference links as the first attempt to improve API documentation. More will follow soon.

Also found out accidentally that updated Configuration class is not generated in the latest commit, so I added it as a separate commit.

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You can merge this Pull Request by running

  git pull https://github.com/guersam/scaloid wip-improve-apidoc

Or view, comment on, or merge it at:

https://github.com/pocorall/scaloid/pull/69

Commit Summary

• Generate Configuration class as changed in afb19ef8
• Add link to Android reference for each generated class

File Changes

• Mproject/AndroidClassExtractor.scala (2)
• Mproject/StringTemplateSupport.scala (3)
• Mproject/st/base.scala.stg (39)
• Mscaloid-common/src/main/scala/org/scaloid/common/content.scala (16)
• Mscaloid-common/src/main/scala/org/scaloid/common/preferences.scala (26)
• Mscaloid-common/src/main/scala/org/scaloid/common/view.scala (44)
• Mscaloid-common/src/main/scala/org/scaloid/common/widget.scala (758)
• Ascaloid-common/src/main/scala/org/scaloid/util/Configuration.scala (54)
• Mscaloid-support-v4/src/main/scala/org/scaloid/support/v4/app.scala (40)

Patch Links:

• https://github.com/pocorall/scaloid/pull/69.patch
• https://github.com/pocorall/scaloid/pull/69.diff