improve maven install process

[physikerwelt]

as discussed on skype
[16:25:32] Moritz Schubotz: thank you travis is happy now
[16:25:47] Alexey Grigorev: great!
[16:26:18] Moritz Schubotz: at least.. if the committed code is correct;-)
[16:26:19] Moritz Schubotz: https://travis-ci.org/TU-Berlin/mathosphere/builds
[16:26:33] Moritz Schubotz: it takes 30 min though
[16:28:03] Moritz Schubotz: on my unix test Server it only takes 1:42.092
[16:28:04] Alexey Grigorev: I think it's because of building an uber jar
[16:28:34] Alexey Grigorev: but I have no idea why on your server it's fast
[16:29:16] Alexey Grigorev: i'd turn building uber jar altogether, but it's also used in many modules
[16:29:17] Moritz Schubotz: i guess better hardware
[16:29:20] Moritz Schubotz: as simple as that
[16:29:24 | Edited 16:29:28] Alexey Grigorev: maybe
[16:29:42] Alexey Grigorev: but the difference is too big
[16:30:06] Alexey Grigorev: on the server do you buld the parent?
[16:30:16] Alexey Grigorev: or just mathosphere?
[16:30:41] Moritz Schubotz: that was just mathosphere-core
[16:31:19] Alexey Grigorev: thats the reason
[16:31:31] Alexey Grigorev: i think
[16:32:17] Moritz Schubotz: the full build takes 4 min
[16:32:45] Moritz Schubotz: but however
[16:33:06] Moritz Schubotz: i'd turn building uber jar altogether, but it's also used in many modules
[16:33:11] Moritz Schubotz: what do you mean by that
[16:33:32] Alexey Grigorev: the build plugin puts all dependencies in one jar
[16:33:57] Alexey Grigorev: it was mostly its output in maven
[16:34:09] Moritz Schubotz: but what's your Suggestion?
[16:34:14] Alexey Grigorev: remove it
[16:34:31] Alexey Grigorev: or from parent to core
[16:34:40] Alexey Grigorev: move from *
[16:35:00] Moritz Schubotz: can you do a pull request
[16:35:09] Alexey Grigorev: not today
[16:35:18] Alexey Grigorev: but i can play with it
[16:35:20] Moritz Schubotz: the core ueber jar might be required to run it on a full cluster
[16:35:33] Moritz Schubotz: otherwise dependencies might be missing
[16:35:36] Alexey Grigorev: only for core
[16:35:46] Moritz Schubotz: yes
[16:35:50] Alexey Grigorev: I'd remove it ftom tests
[16:36:12] Alexey Grigorev: and build it with special instruction like -Puber
[16:36:22] Alexey Grigorev: or smth like this
[16:36:27] Moritz Schubotz: yes that would be great
[16:36:37] Moritz Schubotz: similar to the Profile for publish on maven central
[16:36:59] Alexey Grigorev: yes
[16:37:10] Alexey Grigorev: could you create an issue and assign to me?
[16:37:16] Moritz Schubotz: we do not Need that today, but it would be great in general
[16:37:27] Alexey Grigorev: so i don't forget