Show message if kipi-plugins are not installed
Review Request #129168 - Created Oct. 13, 2016 and submitted
If the kipi-plugins package is not installed as dependency of kipi (Arch Linux) or if it failed to load due to an ABI mismatch, the Share menu would be empty. While at it, move setting of mKipiMenuLoaded to avoid a race condition when the menu is opened too fast. BUG: 358557
No kipi-plugins installed on Arch Linux, now the informational message is shown.
Installed the package, the actions are shown.