Update documentation of ircdb.checkCapability (used in the Sphinx doc).
Switch comments of callbacks.PluginRegexp's attributes to docstrings (for Sphinx).
Fix internationalization of docstrings of wrap()ed commands.
Remove unnecessary call to i18n.reloadLocalesIfRequired.
All plugins: Update .pot files and rename Supybot-fr to Limnora in French translation files.
Time: Update l10n-fr.
Improve the check_trans script by using Supybot's .po(t) parser.

The previous method matched line by line, which broke for msgmerge alternative (poedit\!\!\!) that changes line breaks.
i18n: Move the pot files parsing to a separate function.
AutoMode & Factoids & Google & Math & Network & Seen & Status & Topic: Update l10n-fr.
Remove debug output in check_trans.py.
ChannelStats & MessageParser & PluginDownloader & RSS & User: Update l10n-fr.
Fix memory leak in i18n by using weak references to plugin classes and methods.
Fix case of i18n.InternationalizedString.
Fix case of i18n.InternationalizedFunction.
Remove a message.pot that should not have been there.
Admin & Alias & Later & String: Update l10n-fr.
ChannelStats: Fix typo.
ChannelStats & Conditional & Format & Karma & Web: Update l10n-fr.
Fix compatibility of check_trans.py with Python 3.
Core: Update l10n-fr.