SVN_SILENT made messages (.desktop file)
add mark timeline as read context menu item to tabs.
rename actions to differentiate mark timeline as read and mark all timelines as read.
don't show mark timeline read action if timeline already marked read.

CCBUG: 287684
REVIEW: 111181
Show "in reply to" in twitter search timelines

REVIEW: 111372
Create search tab even if results are empty, add placeholder text in that case

CCBUG: 319150
REVIEW: 111180
Refactored method names handling tweets from Twitter

Because we now only have json support there is no need to keep the
structure names in the method headers anymore. Renamed them for better
readability.
Merge remote-tracking branch 'kde/master' into develop

* kde/master:
  Refactored method names handling tweets from Twitter
  Create search tab even if results are empty, add placeholder text in that case
  Show "in reply to" in twitter search timelines
  add mark timeline as read context menu item to tabs. rename actions to differentiate mark timeline as read and mark all timelines as read. don't show mark timeline read action if timeline already marked read.
  SVN_SILENT made messages (.desktop file)