Bump version and fix wording (fixes #1088)

Signed-off-by: Julius Härtl <jus@bitgrid.net>

appinfo/info.xml

@@ -3,7 +3,7 @@
       xsi:noNamespaceSchemaLocation="https://apps.nextcloud.com/schema/apps/info.xsd">
     <id>deck</id>
     <name>Deck</name>
-    <summary>A kanban style project and personal management tool for Nextcloud</summary>
+    <summary>Personal planning and team project organization</summary>
     <description>Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud.
 
 
@@ -17,7 +17,7 @@
 - 🚀 Get your project organized
 
 </description>
-    <version>0.8.0</version>
+    <version>1.0.0-alpha1</version>
     <licence>agpl</licence>
     <author>Julius Härtl</author>
     <namespace>Deck</namespace>