Fixes#90
__Problem__: VimwikiRenameLink does not rename dir1/toto url in dir2/tata
because the dirs (dir2 and .) were well crossed but badly inspected.
__Solution__: `blob(.ext*)` -> `glob(**/*.ext)` + find the relative URL
* Fasten: VimwikiRenameLink goes faster with cache
More: To compute old_url regex, use a cache dict because it is the same
for files in the same directories
* Util DeleteHiddenBuffer -> do not delete Vader buffer
* Test: Prettify: Util: teardown delete defined function
* Remove unnecessary trailing spaces
Note: list_VimwikiReturn.vader has some necessary trailing spaces
Problem: Could not complete when the user argument was not the begining
of the filepath
Solution: use custom smartcase filter and customlist instead of custom
Adds tests for the commands:
VimwikiTOC, VimwikiGenerateLinks, VimwikiDiaryGenerateLinks,
VimwikiRebuildTags, VimwikiGenerateTags, VimwikiGoto
Add syntax tests, key mapping tests and table auto format tests.
New helper function in vader setup file.
The default wikis setup in the test vimrc are now mapped to the Docker
containers test user's home directory. The test user does not have
access to write to other locations.
