task: Refactor personal contexts

Moved contexts to a separate, gitignored file in case they contain
private information.

.gitignore

@@ -40,3 +40,4 @@ colorscheme.yml
 
 # taskwarrior
 taskwarrior/.config/task/task-sync.rc
+taskwarrior/.config/task/contexts

taskwarrior/.config/task/taskrc

@@ -75,6 +75,9 @@ include colorscheme
 # Taskserver sync settings
 include task-sync.rc
 
+# My personal tw contexts (e.g. work/personal)
+include contexts
+
 # try to fix some color weirdness, especially in tmux
 # color.scheduled=on grey
 
@@ -88,8 +91,4 @@ report._reviewed.columns=uuid
 report._reviewed.sort=reviewed+,modified+
 report._reviewed.filter=( reviewed.none: or reviewed.before:now-6days ) and ( +PENDING or +WAITING )
 
-# different life contexts
-context.arbeit.read=project:arbeit
-context.arbeit.write=project:arbeit
-context.personal.read=project.hasnt:arbeit
 news.version=2.6.0