... add some needed gitignores...

Dependencies

• [2] 4PSZFZ7Y src/root/Makefile: fixup extraction of the fontawesome and bootstrap archives
• [*] GBCPEGYC Add a .gitignore
• [*] G7LMCJH5 Add some gitignores
• [*] 3ZURHKX5 Update .gitignore

Change contents

• edit in .gitignore at line 1
  [4.1]

  [4.2]
  + /.pls_cache
• edit in .gitignore at line 26
  [5.25]

  [6.146]
  + /tests
• edit in .gitignore at line 46
  [2.29]
  + src/root/static/bootstrap*/