[#211] Read 'allowMultiple' attr from question
[#211] Add UI widgets

* Show stored values
* Keep the single barcode consistent
[#211] Store multiple values

* Update UI.
* Read/Write pipe-concatenated values.
[#211] Externalize resources
[#213] Update release notes

* Use plain English descriptions
Merge pull request #219 from akvo/release/2.0.5

[#213] Update release notes
Merge branch 'master' into develop
[#211] Hide blank input on read-only mode
[#211] Update icons
[#221] Bump version number
[#221] Update release notes
[#221] Fix date
Merge pull request #220 from akvo/issue/211-multiple-scan

Issue/211 multiple scan
Merge branch 'develop' into release/2.0.5.1
[#221] Update translations
Merge branch 'release/2.0.5.1'
[#222] Re-export missing files

* Check exported files are found
* Recreate any missing survey zip file
[#223] Check connection status

* Minor code formatting
Merge pull request #224 from akvo/issue/223-network-check

code checked
Merge pull request #225 from akvo/issue/222-reexport-files

code checked