Translation Updates

[Zren]

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https://github.com/Zren/plasma-applet-presentwindows/blob/master/package/translate/template.pot

[Zren]

I've refactored most of the config so there's a number of changes. Also Plasma changed the wording of Desktop Theme to Plasma Style so that changed a lot of messages. Lastly, the metadata.desktop file messages are now parsed too.

https://github.com/Zren/plasma-applet-presentwindows/commit/0d4140573384e2589e002e1c767cd82661a513a4

Added Keys:
"Always"
"Appearance"
"<b>Current Plasma Style:</b> %1"
"Behavior"
"Enable Desktop Effect"
"Never"
"Present Windows Button"
"Should we use a Virtual Desktop indicator similar to Unity 7? This feature is enabled for the <a href=\"[https://store.kde.org/p/998797/\">Unity](https://store.kde.org/p/998797//%22%3EUnity) Ambiance</a> Plasma Style by default."
"Show Overview"
"Trigger the Present Windows desktop effect's shortcut with a click."
"When Plasma Style is Unity Ambiance"

Removed Keys:
"<b>Current Desktop Theme:</b> %1"
"Button will not work when the Desktop Grid desktop effect is disabled."
"Button will not work when the Present Windows desktop effect is disabled."
"<b>Version:</b> %1"
"Enabled"
"Present Windows Effect"
"Should we use a Virtual Desktop indicator similar to Unity 7? This feature is enabled for the <a href=\"[https://store.kde.org/p/998797/\">Unity](https://store.kde.org/p/998797//%22%3EUnity) Ambiance</a> desktop theme by default."
"Show Desktop Grid Effect"

I also wrote a script to populate messages already in the KDE translations so these should be filled out:

https://github.com/Zren/plasma-applet-presentwindows/commit/bd8abe57c39fd12b5b13f4137b891c50f5a0885b

msgid "Appearance"
msgid "Never"
msgid "Always"