[DOC] Added namespaces migration documentation
Merge pull request #7 from hmspl/namespaces

[DOC] Added namespaces migration documentation
[DOC] Updated migration guide re fields rename
Merge pull request #8 from hmspl/fields

[DOC] Updated migration guide re fields rename
[DOC] Added namespaces migration script
Merge pull request #9 from hmspl/namespaces_script

[DOC] Added namespaces migration script
[BUGFIX] Fixed namespaces script
Merge pull request #10 from hmspl/content

[BUGFIX] Fixed namespaces script
[DOC] Added a clear headline and changed the order of the solutions to make the better one appear first.
Merge pull request #11 from randomresult/namespacedocu

[DOC] Added a clear headline and changed the order of the solutions to m...
[DOC] Guide on how to work with locallang.xlf

Small Guide on how to work with localang.xlf in Back- and Frontend
Merge pull request #12 from randomresult/translation

[DOC] Guide on how to work with locallang.xlf
[DOC] Changed filename to WorkingWithLocallang.md
Merge pull request #13 from randomresult/translation

[DOC] Changed filename to WorkingWithLocallang.md
[DOC] Import contribution guide from Flux, add workflow diagram
[DOC] Proof-reading of "Working with Locallang" guide
[DOC] Prepare a "Concepts" section of documentation
[DOC] Add link to LLL guide from README.md
[DOC] Added link to "Concepts" section from README.md
[DOC] Added emphasised note about "Outlet" availability in Flux 7.0.0