Fixes checkin-checkout behaviour for languages.
Fixes checkin-checkout behaviour in translations.
Fixing checkin error on language save & save-close. Adding language string for COM_LOCALISE_LANGUAGES_N_ITEMS_CHECKED_IN & COM_LOCALISE_TRANSLATIONS_N_ITEMS_CHECKED_IN.
Passing the config param directly in getModel to avoid repopulating of the state.
Merge pull request #212 from Achal-Aggarwal/language-checkin-out

Fixes checkin-checkout behavior for languages, translations.
Using package & packagefile id instead of their name. And fixes the model to use in case of packagefile request.
Fixes issues with duplicating, deleting & exporting packages after using package id instead of name in the request.
Fixes checkin-checkout behaviour for packages.
Merge pull request #213 from Achal-Aggarwal/packages-checkin-out

Fixes checkin-checkout behavior for Packages.
Correcting hardcoded metafile and using $small_version instead when
saving a xx-XX.xml
[fix] strings containing HTML code are not saved
Merge pull request #215 from phproberto/html-code

[fix] strings containing HTML code are not saved
Deleting db rows when deleting packages
Deleting former rows in database when modifying the name of a package
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