Launch `BaseballCardDetails` directly rather than with an `ACTION`
Clean up errors and warnings in `BaseballCardList`
Refactor `BaseballCardDetails`
Fix errors in javadoc for `BaseballCardAdapter`
Fix warnings in `BaseballCardProvider`
Fix errors in javadoc for `SingleColumnCursorAdapter`
Add `final` specifier to constants, remove unused imports
Convert fields to local variables
Guard against possible NPE
Fix some warnings
Convert a field to a local variable
Fix error in javadoc
Merge pull request #262 from codeguru42/intent-filter

Launch `BaseballCardDetails` directly rather than with an `ACTION`
Merge pull request #264 from codeguru42/android/javadoc

Fix errors in javadoc and other warnings