noosfero | profile: be case insensitive on urls (#615)

[Bráulio Bhavamitra]

New comment for Merge Request 615

https://gitlab.com/noosfero/noosfero/merge_requests/615#note_1541505


Bráulio Bhavamitra

@terceiro: FYI, the routes' changes are still necessary, as it won't match `:profile` without the `/i` flag.
I would stick with the possibility of just ignoring the case, see for example on github: http://github.com/CiraNDAS.

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