Update all files to use local lib if existant

[szaimen]

No description provided.

[szaimen]

I think this is ready. Hence marking as ready for review
but @enoch85 do you have an idea why travis reports those shellcheck issues although they should be disabled?

[enoch85]

Big PR again... Will take some time to review.

Btw, /var/scripts/main - where does the "main" come from? We don't have that.

[szaimen]

Currently we don't have it but we will create it:
https://github.com/nextcloud/vm/pull/1120/files#diff-90b7ea30bc531dd051547e9ec21aeb32R19-R21

You have to see all PRs that are mentioned in the Issue "What is needed to fix #11" alltogether. I just split it up that you are able to review it. but all are made so that they work standalone.

[szaimen]

I changed the local path to the lib so that everyone who has the lib.sh in "$SCRIPTS" will not automatically use the local lib file, but at the same time we are able to move on, while staying backwards compatible. Because if we would use the "$SCRIPTS"/lib.sh file, all users who would run the app-scripts would always use the local lib.sh file which we don't want since it can be really outdated.
We could change that by removing the lib.sh file when running the apps_scripts but I think it makes sense to have a "main" folder because they aren't in the "$SCRIPTS" location which should only be fore files that can get executed.

[szaimen]

actually this PR should be fairly easy to review since I am only adding the possiblity to use the local lib if existant to all scripts. (just check out the code)
But I still need a hint why travis is reporting those shellcheck issues which should be disabled based on the code...

[szaimen]

closing in favour of #1124