Bump version
Update grammar version
Update changelog
Merge branch 'release/0.26.0'
Merge tag '0.26.0' into develop

* Enhancements
  * [#316, #337]Changes and enhancements in app text
  * [#330] Add storage versioning
* Bug fixes
  * [#331] StringIndexOutOfBoundsException in SettingsActivity
  * [#332] NullPointerException in DailySequenceService
  * [#333] BEQ Notification not removed when BEQs completed
  * [#336] Morning questionnaire beeping and sound for other notifications
  * [#346] Empty results uploaded
  * Fix sync pooling using a bad timer
  * Fix upload of incomplete/missed/dismissed morning and evening questionnaires