Fix check for dangling elses.

Previously, this function didn't take into account
the fact that IFs branches are always BLOCK nodes.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=46953649
Move location manager to the common angular.js externs.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=46958612
Enable suggestion on missing property.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=47001580