LLGroupActions too! (Strengthens RLVa restrictions!)

Cleans up llfloatergroupinfo, makes it an instance tracker... pretty much as nice as llfloateravatarinfo now ^*^
Adds notifications JoinGroupNoCost and JoinedTooManyGroups (added to our existing translations, of course)
Cleans up all around, placing groupactions around.

Touches up bits for avataractions

indra/newview/llpanelgroup.h

@@ -58,10 +58,7 @@ class LLPanelGroup : public LLPanel,
 					 public LLPanelGroupTabObserver
 {
 public:
-	LLPanelGroup(const std::string& filename,
-				 const std::string& name,
-				 const LLUUID& group_id,
-				 const std::string& initial_tab_selected = std::string());
+	LLPanelGroup(const LLUUID& group_id);
 	virtual ~LLPanelGroup();
 
 	virtual BOOL postBuild();
@@ -119,9 +116,6 @@ protected:
 
 	BOOL mForceClose;
 
-	std::string mInitialTab;
-	std::string mFilename;
-
 	std::string mDefaultNeedsApplyMesg;
 	std::string mWantApplyMesg;