storing strings in a map (for fast lookup) in resource manager
To define a string resource in <resources>:
<string name="foo">Hello</string>
To use a string, e.g.:
<text>%@foo%</text>
Not yet done: language-specific resources (should be solved not only for
strings, but for all kinds of resources - e.g. for localized images)
Change-Id: I3ba5cf5298c09e0d28a83973e9662f179271b33f
b2e8f672f3