D14390: Improve the discoverability of the Filter Text plugin and its menu item

[Nathaniel Graham]

ngraham marked an inline comment as done.

REPOSITORY
  R40 Kate

REVISION DETAIL
  https://phabricator.kde.org/D14390

To: ngraham, #kate, dhaumann, cullmann
Cc: kde-doc-english, lueck, kwrite-devel, michaelh, kevinapavew, ngraham, 
demsking, skadinna, cullmann, sars, dhaumann