Fix Nullpointer

Change-Id: I7c036eeeddb09f092767610f9b9fd6a0b4117fd0
Fixed nullpointer for getActivity()

Change-Id: Ia15f09c417139432d6a8754fd6207ce219ead3d1
Fixed nullpointer

Change-Id: I5acec6937bc663076b119dcb35ef91e3cf6ad328
Fixed nullpointer in TaskwarriorSync

Change-Id: I528452406fb8286c61c61f0eb3ecfcb71de30d1a
Version++

Change-Id: Icb4d982d45b1947e4944f8769e430c737bf898fb
Updated changelog

Change-Id: I3a374d0428b44251f2df734703c2b4006e147508
Fixed lint error

Redundant import

Change-Id: Ib5962e4a02b8fce093b83f571b7e0b00753964b0
Fix #444: Recurring tasks: All former tasks are shown in Mirakel

* Fix issue with deleting tasks from sync
* Fix issue with updating tasks from sync

Change-Id: Ifbe5fe83948a3851db29b96559cd5c3b52467118
Fix strange bug with not finding client sync key

Change-Id: Id48626d6a803f3539ca92b70cc6aab3b2dfb7511
Merge "Fix strange bug with not finding client sync key"
Merge commit '65c01112227a8755ebfd7500f8842fd04ef1046a'
Merge commit 'f93a98343c2a6c53bc81da1a49ab446d4f93213c'
Merge commit '60962aedd37d6ce6787460950aae00f2a27f8ae3'
Merge commit '151be16b9062063f3381bcc7e22a9d55b877beb8'
Merge commit '4d6d6f8bc835822b740111c2d58acd7a9cb5d50f'