Symbian: Fix ListItem in UserPage not inverted when in white theme
Support for autocompleter when predictive text is activated

However, this is not supported in Symbian since there is no method to
get the pre-edit text in TextArea of Symbian
Improve search UI

* Remove SearchDialog in TrendsPage
* Add a SearchTextField in TrendsPage and SearchPage
* TrendsPage: show autocompleter when typing in SearchTextField
* Merge tweet search and user search to a single SearchPage with
swipe UI
Rename some files

* Resources files rename from qml{platform}.qrc to {platform}-res.qrc
* twitter.js rename to Twitter.js
Fix some user-visible strings aren't wrap with qsTr()

Also remove arrows from SectionHeader text in TweetPage since it can't
be display due to translation's encoding problem