Anonymous: fix help for allowPrivateTarget

This fixes some grammar issues previously discussed at #limnoria.
Merge pull request #868 from GLolol/patch-1

Anonymous: fix help for allowPrivateTarget
RSS: Prevent errors if users do not use @announce add correctly. Closes GH-869.
Karma: add support configurable chars (picks up where #596 left off)
Karma: fix allowSelfRating
Web: Add explicit error when page encoding cannot be guessed.
Merge pull request #872 from GLolol/karma-configurable-chars

Karma: support configurable increment/decrement chars (Closes #596)
supybot-wizard: suggest Aka instead of Alias
Alias: recommend Aka in supybot-wizard
Merge pull request #873 from Mkaysi/wizard

Recommend Aka in supybot-wizard instead of Alias
Update .mailmap
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Remove racist 'azn' command from Filter plugin
Remove abelist 'lithp' command from Filter plugin

It has been pointed out that it's quite offensive as it makes light of a defect in one's ability of communicating with others and most people that suffer from such a malady are quite sensitive about it
Merge pull request #879 from Erika-Mustermann/patch-1

Remove abelist 'lithp' command from Filter plugin
Filter: Remove tests for old lithp command

The command was removed in dc36ddf, but the tests weren't.
Filter: Fix previous merge.
Revert "Filter: Fix previous merge."

This reverts commit e4025fae7ac33262c81b703752bb6a422d7f3168.
Merge pull request #880 from nyuszika7h/fix-pr-879

Filter: Remove tests for old lithp command
Merge pull request #881 from nyuszika7h/mailmap

Update .mailmap