Revert "Fixed non-attacking related movement while mobs are snared"

Did some testing, this isn't exactly the case on live.

This reverts commit ed6c46f7ffa2a8155e0f22cc52730762df7aee35.
Fix walk speed calculation

Walk speed should be calculated as a movement speed reduction that
stacks with snares so it's possible to snare a mob FD and have it
not be able to walk back.
Update exp.cpp

Replaced elseif statements in group experience calculation with single if statement for calculation when membercount between 2 and 5
Merge pull request #89 from httm/master

Update exp.cpp
Compile fix.
Add some sanity for bard songs in snares ...
Merge branch 'master' of github.com:EQEmu/Server
Implement bard song instrument mod caps

The maximum bard songs can be effected by instrument mods is 3.6.
This is set by the rule Character:BaseInstrumentSoftCap which defaults to 36
Also fix Echo of Taelosia and Ayonae's Tutelage to increase the mod cap.
Implemented Singing/Instrument Mastery as an AA bonus

Don't forget to source the SQL file!
Fix last commit ....
Change INSERT to REPLACE
Fix Spell level restrictions

I made an incorrect assumption, fixed now
Merge branch 'master' of github.com:EQEmu/Server
Fixed Mob::CalcFocusEffect()'s SE_LimitEffect
Fix for a stacking issue with SE_StackingCommand_Block for druid skins
Merge pull request #90 from Leere/stacking_issue

Fix for a stacking issue with SE_StackingCommand_Block for druid skins
Add a little more debug info to MQGate hack detection.
Fix for auto-consume drinking message
Merge pull request #91 from Leere/drink_message

Fix for auto-consume drinking message
Added Mob::DoCastingChecks() which checks for various casting fail conditions while casting