Report number of filtered files in install

[HebaruSan]

Motivation

• In Mods installation problem (windows) #4436, a user accidentally created a global installation filter of i, so all files containing i anywhere in their path were blocked from installing. It would be nice if this was easier to catch.
• We're still at a red status on Coveralls.
• I noted that several translated strings were contributed on Crowdin since the last import of translations, so I tried to download them. To my surprise, those strings were missing from the downloaded source archive.
  Some investigation led me to this checkbox:
  
  This setting was checked, and it was excluding many translated strings from the download because other unrelated strings weren't translated yet, which makes no sense for our usage.

Changes

• Now when we report successful installation, if any files were filtered out by install filters, the message says how many. This way a user with an errant install filter would see things like "(69 files filtered out)", hopefully giving a clue of what is happening.
• A whole bunch of missing already translated strings are now translated. My apologies to their contributors for not attributing them, but there are a lot of strings and digging up when they were added and by whom would be very onerous given how all of this works. Thank you so much regardless!
• Tests are added for:
  • any_of relationships
  • Module labels
  • DictionaryEquals
  • ckan available without details
  • Compatibility warning identifiers loading
  • ModuleVersion.StripEpoch and StripV
  • buildID.txt creation for fake instances
  • DirectoryLink
  • More of GithubTransformer and GithubApi
  • More of GameInstance
  • Invalid x_netkan_version_edit input
  • More of NetKAN.Model.Metadata