Multi period investment

[nailend]

Fix #106 Components work with multi-period approach. Yet missing, is a rework of the read_datapackage function and a way trigger the multi period opt, which will be addressed in another issue.

• [x] Added new lifetime parameter for expandable facades
• [x] Added new age parameter for expandable facades
• [x] Added new fixed_costs parameter for expandable facades
• [x] Added constraint test for multi-period approach
• [x] Added generated LP-files
• [x] Vaguely checked LP-files
• [x] compared results investment scenario ( v.0.3.0 to current)

[henhuy]

As I remember there was an age parameter in MP-feature - shouldn't facades provide it too?

[nailend]

As I remember there was an age parameter in MP-feature - shouldn't facades provide it too?

You are right. Sorry, I only fixed what was necessary to make it run. Will do a rework.