Bug 533984 - Make the description of the Lightning XPI generic and application independent. r=philipp

calendar/lightning/install.rdf

@@ -32,7 +32,7 @@
     <em:id>@XPI_EM_ID@</em:id>
     <em:name>Lightning</em:name>
     <em:version>@LIGHTNING_VERSION@</em:version> <!-- BuildID=@MOZ_BUILDID@ -->
-    <em:description>An integrated calendar for Thunderbird</em:description>
+    <em:description>Integrated Calendaring &amp; Scheduling for your Email client</em:description>
 #ifdef LIGHTNING_PRERELEASE_VERSION
     <em:developer>Build ID: @MOZ_BUILDID@</em:developer>
 #endif

calendar/locales/en-US/chrome/lightning/lightning.properties

@@ -4,7 +4,7 @@
 
 # addon description:
 extensions.{e2fda1a4-762b-4020-b5ad-a41df1933103}.name=Lightning
-extensions.{e2fda1a4-762b-4020-b5ad-a41df1933103}.description=An integrated calendar for Thunderbird
+extensions.{e2fda1a4-762b-4020-b5ad-a41df1933103}.description=Integrated Calendaring & Scheduling for your Email client
 extensions.{e2fda1a4-762b-4020-b5ad-a41df1933103}.creator=Mozilla Calendar Project
 
 # Lightning branding