Move WebView method call back to the main thread. Fixes #1057.
Also compare postId in postsListMatch, because the postId can change if the user refreshes the posts list. Fixes #1058.
Remove some srcDirs to fix issues in Android Studio after 0.5.0 update.
Coding style: Use != comparisons. #brainfart
Merge pull request #1062 from wordpress-mobile/issue/1058-post-selection-error

Posts list/selection fixes