The history generation does not respect ignored files/dirs and symlinks

[tulinkry]

Discovered while solving #1315.

Reproducible with steps:

mkdir repo
cd repo
git init
mkdir foo
touch main.c
git add .
git commit -m "commit"

Then run the indexer with an -i main.c switch to ignore such file. Investigating the data directory, there is a record for main.c in the historycache.

• hitting http://localhost:8080/source/history/repo/main.c works (as unexpected) and shows the commit
• hitting http://localhost:8080/source/xref/repo/main.c doesn't (as expected)

I believe the same works for acceptedSymlinks as the code lacks this code as well.

[tulinkry]

fixed with 8ed071e in #1386