Remove jQuery, optimize JS

[gregurco]

Q	A
Bug fix	yes
New feature	no
BC breaks	no
Deprecations	no
Tests pass	yes
Fixed tickets	[#188]
License	MIT

What I did:

• remove jQuery - I don't think we need the whole library for 1-2 methods that can be written on clean JS + I think issue in #188 was cause because conflict between different jQuery versions. It's better to remove it at all than to fix conflicts.
• moved script tab out of the loop - there was script tab in look and bloc was generated for each request. Now there are only one script tag and js code per whole page
• removed id if there are multiple elements with same id. It's not allowed in html to have multiple elements with same id. Technically it can work, but its better to avoid such as cases.
• remove variable that tracks first element in look. Used loop.index0 for that

@florianpreusner what do you think? It's not finished and tested good yet but I want to know your opinion. Finally we can move back jQuery anytime if we will observe that some functionality that strictly depends on it appears.

[florianpreusner]

• remove jQuery: 👍 nice idea. you are right, we only use 0,0001% of this library!
• moved script tab out of the loop: 👍
• removed id if there are multiple elements with same id: ooooops 😆 👍
• Used loop.index0: nice! much cleaner!

[florianpreusner]

Maybe we can also ask reporter of #188 if this approach resolves the issue.

[gregurco]

@florianpreusner thank you for feedback :slightly_smiling_face: I asked for help with testing in #188 but I will test it too

[gregurco]

@florianpreusner please take a look :) I renamed and normalized all classes to prevent conflicts. I used BOM CSS naming convention. And also I tested and it seems to be ok :slightly_smiling_face:

[florianpreusner]

@gregurco Can you commit a small change to trigger SensioLabsInsight again? I reactivated this check. When there is inactivity the automatic check gets disabled :/

[gregurco]

@florianpreusner triggered, verified and merged :slightly_smiling_face:

[florianpreusner]

@gregurco, Good job! Thanks!