FN_UNO_FIRST_SHARE_CONTENT replaced by SID_ATTR_PAGE_SHARED_FIRST

Change-Id: Ic32229d57a7e3b3a7b27e56f8ac0dcfdda8f4f26
sw: clean up over-abstracted string constants

Grepping for a property name should find something.

Change-Id: I908d514d5dcfd16951ebbb0157a6af9646e6db53
sw: SwXAutoStyle::mpSet is read-only

... because it is an alias to the item set that is stored in the core
auto-style cache, which must _not_ be modified.

So remove the implementation of SwXAutoStyle::setPropertiesToDefault().

(regression from commit 7d9bb549d498d6beed2c4050c402d09643febdfa)

Change-Id: If529862d14a1c1e700ac898964560f386bf488f8